<s>
The	O
Apple	B-Device
S1	I-Device
is	O
the	O
integrated	O
computer	O
in	O
the	O
Apple	B-Device
Watch	I-Device
,	O
and	O
it	O
is	O
described	O
as	O
a	O
"	O
System	B-Algorithm
in	I-Algorithm
Package	I-Algorithm
"	O
(	O
SiP	O
)	O
by	O
Apple	O
Inc	O
.	O
</s>
<s>
Samsung	O
is	O
said	O
to	O
be	O
the	O
main	O
supplier	O
of	O
key	O
components	O
,	O
such	O
as	O
the	O
RAM	B-Architecture
and	O
NAND	O
flash	B-Device
storage	I-Device
,	O
and	O
the	O
assembly	O
itself	O
,	O
but	O
early	O
teardowns	O
reveal	O
RAM	B-Architecture
and	O
flash	B-Device
memory	I-Device
from	O
Toshiba	O
and	O
Micron	O
Technology	O
.	O
</s>
<s>
It	O
uses	O
a	O
customized	O
application	B-Architecture
processor	I-Architecture
that	O
together	O
with	O
memory	B-Architecture
,	O
storage	B-Device
and	O
support	O
processors	O
for	O
wireless	O
connectivity	O
,	O
sensors	O
and	O
I/O	B-General_Concept
constitute	O
a	O
complete	O
computer	O
in	O
a	O
single	O
package	O
.	O
</s>
<s>
This	O
package	O
is	O
filled	O
with	O
resin	B-Language
for	O
durability	O
.	O
</s>
<s>
From	O
reverse	O
engineering	O
,	O
the	O
processor	O
handling	O
the	O
Wi-Fi	O
and	O
Bluetooth	B-Protocol
is	O
a	O
Broadcom	O
BCM43342	O
and	O
the	O
six-axis	O
gyroscope	B-Application
is	O
from	O
STMicroelectronics	O
.	O
</s>
<s>
Apple	O
designed	O
32-bit	O
ARMv7	O
based	O
application	B-Architecture
processor	I-Architecture
APL0778	O
as	O
the	O
central	B-General_Concept
processing	I-General_Concept
unit	I-General_Concept
(	O
CPU	O
)	O
,	O
with	O
an	O
integrated	O
PowerVR	O
SGX543	O
graphics	B-Architecture
processing	I-Architecture
unit	I-Architecture
(	O
GPU	B-Architecture
)	O
.	O
</s>
<s>
The	O
SiP	O
in	O
Apple	B-Device
Watch	I-Device
Series	I-Device
1	I-Device
is	O
called	O
S1P	O
and	O
looks	O
superficially	O
identical	O
to	O
the	O
S1	O
,	O
but	O
in	O
reality	O
is	O
an	O
S2	B-Device
minus	O
the	O
on-chip	O
GPS	O
functionality	O
.	O
</s>
<s>
It	O
contains	O
the	O
same	O
dual-core	O
CPU	O
with	O
the	O
same	O
new	O
GPU	B-Architecture
capabilities	O
as	O
the	O
S2	B-Device
making	O
it	O
about	O
50%	O
faster	O
than	O
the	O
S1	O
.	O
</s>
<s>
The	O
S1	O
made	O
its	O
first	O
appearance	O
within	O
the	O
Apple	B-Device
Watch	I-Device
,	O
which	O
arrived	O
in	O
April	O
2015	O
.	O
</s>
<s>
The	O
S1	O
was	O
discontinued	O
with	O
the	O
launch	O
of	O
Apple	B-Device
Watch	I-Device
Series	I-Device
1	I-Device
,	O
containing	O
the	O
S1P	O
.	O
</s>
<s>
The	O
S1P	O
was	O
released	O
with	O
the	O
Apple	B-Device
Watch	I-Device
Series	I-Device
1	I-Device
on	O
16	O
September	O
2016	O
.	O
</s>
