Inside of its case, it is mostly a standard CR2016 batt of lithiumothy, powering Bluetooth low energy (LE) system in chip (SoC), chip is a nordic nRF51822 and a gold scroll pattern (uppere-left) is an antenna.
Inside its case, it is mostly a standard CR2016 lithium battery, powering a Bluetooth low energy (LE) system-on-chip (SoC). The chip is a Nordic nRF51822 and the gold scroll pattern (upper-left) is the antenna.