<s>
The	O
UE	B-Application
ROLL	I-Application
is	O
an	O
ultra-portable	O
speaker	O
manufactured	O
by	O
Ultimate	O
Ears	O
,	O
supporting	O
Bluetooth	B-Protocol
and	O
wired	O
connections	O
.	O
</s>
<s>
Announced	O
on	O
June	O
16	O
,	O
2015	O
,	O
the	O
UE	B-Application
Roll	I-Application
replaces	O
Ultimate	O
Ears	O
's	O
UE	O
MINI	O
BOOM	O
as	O
the	O
company	O
's	O
lower-end	O
model	O
.	O
</s>
<s>
The	O
speaker	O
is	O
of	O
a	O
discus-like	O
shape	O
,	O
in	O
diameter	O
,	O
maximum	O
thickness	O
,	O
and	O
weighing	O
.	O
</s>
<s>
UE	B-Application
ROLL	I-Application
consists	O
of	O
a	O
driver	O
coupled	O
with	O
two	O
tweeters	O
which	O
are	O
in	O
stereo	O
,	O
so	O
there	O
is	O
a	O
small	O
amount	O
of	O
stereo	O
separation	O
.	O
</s>
<s>
In	O
addition	O
to	O
supporting	O
Bluetooth	B-Protocol
,	O
the	O
speaker	O
can	O
be	O
connected	O
via	O
a	O
standard	O
3.5mm	O
audio	O
input	O
.	O
</s>
<s>
It	O
also	O
supports	O
Bluetooth	B-Protocol
4.0	O
,	O
allowing	O
it	O
to	O
be	O
remotely	O
switched	O
on	O
by	O
a	O
connected	O
mobile	O
device	O
running	O
Ultimate	O
Ear	O
's	O
app	O
,	O
and	O
giving	O
the	O
speaker	O
a	O
wireless	O
range	O
of	O
up	O
to	O
.	O
</s>
<s>
A	O
rechargeable	O
lithium-ion	O
battery	O
is	O
built	O
into	O
the	O
UE	B-Application
ROLL	I-Application
,	O
providing	O
up	O
to	O
9	O
hours	O
of	O
playback	O
.	O
</s>
<s>
Charging	O
is	O
done	O
using	O
a	O
provided	O
micro-usb	O
to	O
usb	B-Protocol
cable	O
,	O
and	O
is	O
estimated	O
to	O
take	O
5.5	O
hours	O
for	O
a	O
full	O
charge	O
.	O
</s>
<s>
While	O
generally	O
well	O
received	O
as	O
a	O
rugged	O
,	O
weather-proof	O
speaker	O
,	O
the	O
UE	B-Application
ROLL	I-Application
has	O
been	O
criticised	O
for	O
a	O
lack	O
of	O
deep	O
bass	O
.	O
</s>
<s>
TechRadar	O
described	O
the	O
UE	B-Application
ROLL	I-Application
's	O
greatest	O
flaw	O
being	O
"	O
that	O
it	O
replaces	O
the	O
Mini	O
Boom	O
"	O
.	O
</s>
