<http://schema.org/articleBody>
"The first complete teardown of the S1 system-on-chip in the Apple Watch shows parts from a number of different manufacturers, including a Broadcom wireless chip, and memory from Elpida, Toshiba, and SanDisk, a detailed look inside the custom chip revealed on Thursday.\r\n\r\n&amp;lt;div align=\"center\"&amp;gt;&amp;lt;img src=http://photos.appleinsider.com/gallery/12741-6940-ApplewatchPCBPR2-l.jpg alt=\"\" /&amp;gt;\r\n&amp;lt;span class=\"minor2 small gray\"&amp;gt;&amp;lt;/span&amp;gt;&amp;lt;/div&amp;gt;\r\n\r\nAt &amp;lt;a href=\"https://www.abiresearch.com/press/apple-watch-insides-pcb-details-revealed-for-the-f/\"&amp;gt;the heart&amp;lt;/a&amp;gt; of the S1 is an Apple-designed processor, labeled the APL 0778, as discovered by ABI Research. The Broadcom chip is a BCM43342, capable of Wi-Fi, Bluetooth, NFC, and even FM radio, although the FM functions aren't actually used. Supporting the NFC capabilities, used for Apple Pay, are an NXP-made controller and a signal booster from AMS.\r\n\r\nThe device has 512 megabytes of Elpida RAM, which is paired with 8 gigabytes of storage from SanDisk and Toshiba. The Watch stores relatively little on-board, instead pulling most data from a paired iPhone. Users can, however, save a music playlist to their Watch for unpaired listening, and native third-party apps are planned for later this year.\r\n\r\nAccelerometer and gyroscope functions are handled by an STM chip, while an ADI controller handles touch gestures. Finally, power is routed through a Dialog power management unit and an IDT-made wireless charger.\r\n\r\nABI commented that the S1 is an \"obvious variation from Apple's smartphones,\" compressing many parts normally reserved for those devices. A recent &amp;lt;a href=\"http://appleinsider.com/articles/15/04/24/apple-watch-chips-laid-bare-in-x-ray-microscope-imagery\"&amp;gt;Chipworks X-ray&amp;lt;/a&amp;gt; of the S1 showed that the STM chip is the first in an Apple product that merges accelerometer and gyroscope functions."^^<http://www.w3.org/2001/XMLSchema#string>
<http://appleinsider.com/articles/15/04/30/teardown-shows-apple-watch-s1-chip-has-custom-cpu-512mb-ram-8gb-storage>