<s>
Fitbit	B-Application
(	O
stylized	O
as	O
fitbit	B-Application
)	O
is	O
an	O
American	O
consumer	O
electronics	O
and	O
fitness	O
company	O
.	O
</s>
<s>
It	O
produces	O
wireless-enabled	O
wearable	B-Operating_System
technology	I-Operating_System
,	O
physical	O
fitness	B-Device
monitors	I-Device
and	O
activity	B-Device
trackers	I-Device
such	O
as	O
smartwatches	B-Application
,	O
pedometers	O
and	O
monitors	O
for	O
heart	O
rate	O
,	O
quality	O
of	O
sleep	O
and	O
stairs	O
climbed	O
as	O
well	O
as	O
related	O
software	O
.	O
</s>
<s>
The	O
company	O
was	O
acquired	O
by	O
Google	B-Application
in	O
January	O
2021	O
.	O
</s>
<s>
In	O
2019	O
,	O
Fitbit	B-Application
was	O
the	O
fifth	O
largest	O
wearable	B-Operating_System
technology	I-Operating_System
company	O
in	O
shipments	O
.	O
</s>
<s>
In	O
October	O
2007	O
,	O
it	O
changed	O
its	O
name	O
to	O
Fitbit	B-Application
,	O
Inc	O
.	O
</s>
<s>
On	O
March	O
5	O
,	O
2015	O
,	O
Fitbit	B-Application
acquired	O
fitness	O
coaching	O
app	O
developer	O
Fitstar	O
for	O
$17.8	O
million	O
.	O
</s>
<s>
In	O
May	O
2016	O
,	O
Fitbit	B-Application
acquired	O
a	O
wearable	O
payment	O
platform	O
from	O
smart	O
credit	O
card	O
company	O
Coin	O
.	O
</s>
<s>
On	O
December	O
6	O
,	O
2016	O
,	O
Fitbit	B-Application
acquired	O
assets	O
from	O
Pebble	B-Device
for	O
$23	O
million	O
.	O
</s>
<s>
On	O
January	O
10	O
,	O
2017	O
,	O
Fitbit	B-Application
acquired	O
Romania-based	O
smartwatch	B-Application
startup	O
Vector	O
Watch	O
SRL	O
.	O
</s>
<s>
On	O
February	O
13	O
,	O
2018	O
,	O
Fitbit	B-Application
acquired	O
Twine	O
Health	O
.	O
</s>
<s>
In	O
February	O
2018	O
,	O
Fitbit	B-Application
announced	O
a	O
partnership	O
with	O
Adidas	O
to	O
release	O
an	O
Adidas-branded	O
Fitbit	B-Application
Ionic	O
;	O
it	O
was	O
released	O
on	O
March	O
19	O
,	O
2018	O
.	O
</s>
<s>
In	O
August	O
2018	O
,	O
Blue	O
Cross	O
Blue	O
Shield	O
Association	O
announced	O
a	O
partnership	O
with	O
Fitbit	B-Application
in	O
which	O
BCBS	O
will	O
include	O
Fitbit	B-Application
's	O
wearables	O
and	O
fitness	B-Device
trackers	I-Device
in	O
its	O
Blue365	O
program	O
.	O
</s>
<s>
In	O
January	O
2021	O
,	O
Fitbit	B-Application
was	O
acquired	O
by	O
Google	B-Application
and	O
absorbed	O
into	O
its	O
hardware	O
division	O
.	O
</s>
<s>
The	O
acquisition	O
was	O
scrutinized	O
by	O
regulators	O
concerned	O
over	O
Google	B-Application
's	I-Application
access	O
to	O
personal	O
data	O
in	O
both	O
the	O
United	O
States	O
and	O
Europe	O
.	O
</s>
<s>
The	O
first	O
product	O
released	O
was	O
the	O
Fitbit	B-Application
Tracker	I-Application
,	O
which	O
was	O
released	O
in	O
2009	O
.	O
</s>
<s>
In	O
2014	O
,	O
Fitbit	B-Application
began	O
offering	O
activity	B-Device
trackers	I-Device
,	O
along	O
with	O
a	O
website	O
and	O
a	O
mobile	B-Application
app	I-Application
for	O
iOS	B-Application
,	O
Android	B-Application
and	O
Windows	B-Operating_System
10	I-Operating_System
Mobile	I-Operating_System
This	O
allows	O
the	O
trackers	O
to	O
sync	O
to	O
devices	O
such	O
as	O
mobile	O
phones	O
via	O
Bluetooth	B-Protocol
,	O
or	O
to	O
a	O
Bluetooth-equipped	O
computer	O
running	O
Windows	O
or	O
MacOS	B-Application
.	O
</s>
<s>
In	O
2017	O
,	O
the	O
company	O
released	O
its	O
Fitbit	B-Application
Ionic	O
smartwatch	B-Application
,	O
and	O
in	O
2018	O
,	O
it	O
released	O
a	O
redesigned	O
,	O
lower-priced	O
version	O
of	O
the	O
smartwatch	B-Application
called	O
the	O
Versa	O
.	O
</s>
<s>
The	O
Fitbit	B-Application
Charge	O
3	O
,	O
a	O
wristband	O
health	O
and	O
fitness	B-Device
tracker	I-Device
introduced	O
in	O
October	O
2018	O
,	O
was	O
the	O
first	O
device	O
to	O
feature	O
an	O
oxygen	O
saturation	O
(	O
SPO2	O
)	O
sensor	O
;	O
however	O
,	O
as	O
of	O
January	O
2019	O
,	O
it	O
was	O
non-functional	O
and	O
Fitbit	B-Application
did	O
not	O
provide	O
an	O
implementation	O
timeline	O
.	O
</s>
<s>
The	O
Fitbit	B-Application
Charge	O
3	O
comes	O
with	O
two	O
different-sized	O
bands	O
:	O
small	O
and	O
large	O
.	O
</s>
<s>
Fitbit	B-Application
Charge	O
3	O
comes	O
in	O
two	O
color	O
combos	O
:	O
a	O
Rose-Gold	O
case	O
with	O
a	O
Blue	O
Grey	O
band	O
and	O
a	O
“	O
Graphite	O
Aluminum	O
”	O
screen	O
case	O
with	O
a	O
Black	O
band	O
.	O
</s>
<s>
On	O
December	O
17	O
,	O
2018	O
,	O
Fitbit	B-Application
released	O
the	O
Fitbit	B-Application
OS	O
3.0	O
,	O
which	O
included	O
an	O
extended	O
dashboard	O
,	O
quick	O
logging	O
for	O
weight	O
and	O
water	O
intake	O
,	O
and	O
goal-based	O
exercise	O
mode	O
.	O
</s>
<s>
The	O
new	O
extended	O
on-device	O
dashboard	O
(	O
Fitbit	B-Application
Today	O
)	O
would	O
include	O
more	O
data	O
regarding	O
sleep	O
,	O
water	O
intake	O
and	O
weight	O
.	O
</s>
<s>
There	O
are	O
three	O
versions	O
of	O
the	O
Fitbit	B-Device
Versa	I-Device
,	O
standard	O
,	O
Special	O
,	O
and	O
Lite	O
.	O
</s>
<s>
In	O
December	O
2018	O
,	O
Fitbit	B-Application
added	O
an	O
API	O
and	O
open	O
source	O
tools	O
to	O
allow	O
developers	O
to	O
better	O
build	O
apps	O
for	O
its	O
smartwatch	B-Application
products	O
.	O
</s>
<s>
On	O
January	O
2	O
,	O
2019	O
,	O
the	O
company	O
announced	O
the	O
release	O
of	O
the	O
Fitbit	B-Application
Charge	O
3	O
in	O
India	O
.	O
</s>
<s>
On	O
June	O
3	O
,	O
2020	O
,	O
during	O
the	O
COVID-19	O
pandemic	O
,	O
the	O
company	O
announced	O
Fitbit	B-Application
Flow	O
,	O
a	O
ventilator	O
in	O
response	O
to	O
the	O
shortages	O
of	O
ventilators	O
in	O
medical	O
centers	O
and	O
hospitals	O
around	O
the	O
world	O
which	O
are	O
needed	O
to	O
treat	O
critically	O
ill	O
patients	O
.	O
</s>
<s>
Despite	O
getting	O
emergency	O
approval	O
from	O
the	O
Food	O
and	O
Drug	O
Administration	O
,	O
the	O
company	O
does	O
not	O
consider	O
Fitbit	B-Application
Flow	O
as	O
a	O
drop-in	O
replacement	O
for	O
traditional	O
ventilators	O
.	O
</s>
<s>
Therefore	O
,	O
the	O
company	O
intends	O
for	O
Fitbit	B-Application
Flow	O
to	O
be	O
used	O
only	O
during	O
the	O
COVID-19	O
pandemic	O
.	O
</s>
<s>
In	O
August	O
2020	O
,	O
Fitbit	B-Application
also	O
announced	O
new	O
smartwatches	B-Application
,	O
the	O
Versa	O
3	O
,	O
the	O
Inspire	O
2	O
,	O
and	O
the	O
Fitbit	B-Application
Sense	O
,	O
which	O
includes	O
new	O
health	O
metrics	O
and	O
analysis	O
such	O
as	O
stress	O
sensing	O
,	O
oxygen	O
saturation	O
,	O
and	O
skin	O
temperature	O
.	O
</s>
<s>
Certain	O
Sense	O
,	O
Versa	O
,	O
Ionic	O
,	O
and	O
Charge	O
products	O
support	O
Fitbit	B-Application
Pay	O
,	O
which	O
is	O
a	O
digital	O
wallet	O
that	O
uses	O
near	O
field	O
communication	O
to	O
make	O
payments	O
at	O
point	O
of	O
sale	O
.	O
</s>
<s>
In	O
August	O
2022	O
,	O
Fitbit	B-Application
announced	O
new	O
smartwatches	B-Application
,	O
the	O
Versa	O
4	O
,	O
the	O
Inspire	O
3	O
,	O
and	O
the	O
Sense	O
2	O
,	O
featuring	O
incremental	O
improvements	O
mainly	O
in	O
fitness	B-Device
tracking	I-Device
features	O
and	O
battery	O
life	O
over	O
the	O
last	O
iterations	O
.	O
</s>
<s>
In	O
2008	O
,	O
Fitbit	B-Application
was	O
named	O
the	O
runner-up	O
at	O
TechCrunch50	O
,	O
and	O
in	O
2009	O
,	O
it	O
was	O
named	O
both	O
the	O
"	O
Innovation	O
honoree	O
"	O
and	O
"	O
best	O
in	O
the	O
Health	O
&	O
Wellness	O
category	O
"	O
at	O
CES	O
.	O
</s>
<s>
In	O
2016	O
,	O
Fitbit	B-Application
ranked	O
37th	O
of	O
50	O
for	O
most	O
innovative	O
companies	O
for	O
that	O
year	O
.	O
</s>
<s>
Also	O
in	O
2016	O
,	O
Fitbit	B-Application
was	O
ranked	O
#46	O
on	O
the	O
Deloitte	O
Fast	O
500	O
North	O
America	O
list	O
.	O
</s>
<s>
Fitbit	B-Application
devices	O
that	O
are	O
worn	O
on	O
the	O
hip	O
accurately	O
measured	O
steps	O
taken	O
within	O
1	O
step	O
of	O
100%	O
accuracy	O
.	O
</s>
<s>
When	O
measuring	O
the	O
number	O
of	O
calories	O
burned	O
,	O
Fitbit	B-Application
devices	O
worn	O
on	O
the	O
hip	O
underestimated	O
by	O
an	O
average	O
of	O
6%	O
,	O
while	O
devices	O
worn	O
on	O
the	O
wrist	O
overestimated	O
calories	O
burned	O
by	O
21%	O
.	O
</s>
<s>
Authors	O
concluded	O
that	O
both	O
the	O
Fitbit	B-Application
One	O
and	O
Fitbit	B-Application
Flex	O
devices	O
reliably	O
measured	O
step	O
counts	O
and	O
energy	O
expenditure	O
,	O
with	O
hip-based	O
Fitbit	B-Application
devices	O
being	O
more	O
accurate	O
than	O
wrist-based	O
devices	O
.	O
</s>
<s>
A	O
2019	O
study	O
found	O
that	O
the	O
Fitbit	B-Application
Charge	O
2	O
accurately	O
measures	O
the	O
average	O
heart	O
rate	O
of	O
healthy	O
adults	O
during	O
sleep	O
,	O
and	O
that	O
it	O
is	O
most	O
accurate	O
for	O
medium	O
range	O
of	O
heart	O
rate	O
.	O
</s>
<s>
A	O
2019	O
study	O
found	O
that	O
Fitbit	B-Application
Charge	O
2	O
relative	O
to	O
EEG	O
,	O
overestimated	O
sleep	O
efficiency	O
by	O
about	O
4%	O
,	O
but	O
there	O
was	O
no	O
difference	O
in	O
measured	O
total	O
sleep	O
time	O
.	O
</s>
<s>
A	O
2019	O
review	O
found	O
that	O
Fitbit	B-Application
devices	O
,	O
which	O
utilize	O
the	O
sleep-staging	O
feature	O
,	O
show	O
a	O
better	O
performance	O
than	O
non-sleep-staging	O
models	O
,	O
especially	O
in	O
differentiating	O
wake	O
from	O
sleep	O
.	O
</s>
<s>
On	O
February	O
20	O
,	O
2014	O
,	O
Fitbit	B-Application
worked	O
with	O
the	O
U.S.	O
Consumer	O
Product	O
Safety	O
Commission	O
(	O
CPSC	O
)	O
to	O
recall	O
the	O
Fitbit	B-Application
Force	O
because	O
some	O
users	O
experienced	O
allergic	O
reactions	O
to	O
the	O
materials	O
used	O
in	O
the	O
product	O
.	O
</s>
<s>
Following	O
an	O
investigation	O
,	O
Fitbit	B-Application
was	O
adamant	O
that	O
the	O
exploding	O
tracker	O
was	O
caused	O
by	O
external	O
forces	O
,	O
and	O
assured	O
customers	O
that	O
it	O
was	O
not	O
aware	O
of	O
any	O
other	O
complaints	O
and	O
that	O
they	O
could	O
wear	O
their	O
own	O
Fitbits	B-Application
without	O
concern	O
.	O
</s>
<s>
On	O
March	O
2	O
,	O
2022	O
,	O
Fitbit	B-Application
issued	O
a	O
voluntary	O
recall	O
of	O
its	O
Ionic	O
smartwatches	B-Application
after	O
reports	O
of	O
overheating	O
batteries	O
which	O
caused	O
skin	O
burns	O
for	O
some	O
owners	O
.	O
</s>
<s>
To	O
set	O
up	O
and	O
use	O
Fitbit	B-Application
devices	O
,	O
users	O
must	O
create	O
an	O
account	O
with	O
Fitbit	B-Application
and	O
agree	O
to	O
data	O
collection	O
,	O
transfer	O
and	O
privacy	O
rules	O
.	O
</s>
<s>
Starting	O
in	O
June	O
2011	O
,	O
Fitbit	B-Application
was	O
criticized	O
for	O
its	O
website	O
's	O
default	O
activity-sharing	O
settings	O
,	O
which	O
made	O
users	O
 '	O
manually-entered	O
physical	O
activities	O
available	O
for	O
public	O
viewing	O
.	O
</s>
<s>
Fitbit	B-Application
responded	O
to	O
criticism	O
by	O
making	O
all	O
such	O
data	O
private	O
by	O
default	O
and	O
requesting	O
that	O
search	O
engines	O
remove	O
indexed	O
user	O
profile	O
pages	O
from	O
their	O
databases	O
.	O
</s>
<s>
The	O
acquisition	O
by	O
Alphabet	O
has	O
resulted	O
in	O
concern	O
that	O
Fitbit	B-Application
user	O
data	O
could	O
be	O
combined	O
with	O
other	O
Google	B-Application
services	O
data	O
or	O
sold	O
for	O
purposes	O
such	O
as	O
targeted	O
advertising	O
.	O
</s>
<s>
In	O
response	O
,	O
Fitbit	B-Application
stated	O
in	O
2019	O
that	O
user	O
data	O
would	O
not	O
be	O
used	O
or	O
sold	O
for	O
advertising	O
by	O
Google	B-Application
,	O
citing	O
that	O
trustworthiness	O
was	O
"	O
paramount	O
"	O
to	O
the	O
company	O
,	O
and	O
that	O
the	O
sale	O
would	O
not	O
change	O
their	O
historic	O
commitment	O
to	O
user	O
privacy	O
and	O
security	O
.	O
</s>
<s>
The	O
company	O
's	O
devices	O
have	O
also	O
been	O
used	O
in	O
criminal	O
investigations	O
;	O
in	O
one	O
instance	O
,	O
a	O
rape	O
claim	O
against	O
an	O
unnamed	O
intruder	O
was	O
turned	O
around	O
to	O
a	O
criminal	O
charge	O
for	O
false	O
reports	O
based	O
on	O
data	O
from	O
the	O
claimant	O
's	O
Fitbit	B-Application
.	O
</s>
<s>
Police	O
found	O
a	O
Fitbit	B-Application
lying	O
on	O
the	O
floor	O
when	O
they	O
arrived	O
at	O
the	O
scene	O
.	O
</s>
<s>
Prosecutors	O
used	O
the	O
Fitbit	B-Application
as	O
evidence	O
and	O
data	O
to	O
determine	O
what	O
had	O
occurred	O
.	O
</s>
<s>
The	O
Fitbit	B-Application
revealed	O
that	O
the	O
woman	O
was	O
active	O
throughout	O
the	O
night	O
,	O
and	O
the	O
Fitbit	B-Application
surveillance	O
analysis	O
demonstrated	O
the	O
woman	O
had	O
not	O
gone	O
to	O
bed	O
as	O
she	O
stated	O
to	O
the	O
police	O
,	O
proving	O
that	O
the	O
woman	O
had	O
lied	O
to	O
the	O
police	O
.	O
</s>
<s>
In	O
2017	O
,	O
a	O
Fitbit	B-Application
device	O
played	O
a	O
role	O
in	O
solving	O
a	O
murder	O
.	O
</s>
<s>
However	O
,	O
Connie	O
's	O
Fitbit	B-Application
tracker	I-Application
showed	O
that	O
she	O
was	O
at	O
the	O
gym	O
at	O
the	O
time	O
Richard	O
told	O
police	O
his	O
wife	O
was	O
shot	O
.	O
</s>
<s>
Using	O
Connie	O
's	O
Fitbit	B-Application
and	O
analyzing	O
her	O
movements	O
,	O
analysts	O
were	O
able	O
to	O
create	O
a	O
timeline	O
that	O
proved	O
Richard	O
had	O
created	O
a	O
false	O
story	O
.	O
</s>
<s>
In	O
2018	O
,	O
a	O
Fitbit	B-Application
device	O
played	O
a	O
role	O
in	O
solving	O
another	O
murder	O
.	O
</s>
<s>
Data	O
from	O
her	O
Fitbit	B-Application
fitness	B-Device
tracker	I-Device
showed	O
that	O
her	O
heart	O
rate	O
spiked	O
when	O
Aiello	O
visited	O
her	O
and	O
stopped	O
five	O
minutes	O
before	O
he	O
left	O
.	O
</s>
