Network/bearer sim size embedded-sim infra 3g wcdma,4g lte fdd 3g umts b2(1900),b4(aws),b5(850) 4g lte b2(1900),b4(aws),b5(850),b12(700),b13(700),b25(1900),b26(850),b66(aws-3),b71(600) location technology gps,glonass,galileo wi-fi 802.11 a/b/g/n 2.4+5ghz nfc bluetooth v5.0 wear os powered by samsung technology (main display) super amoled size (main display)42mm resolution (main display) 396 x 396 color depth (main display) 16m processor cpu speed 1.18ghz cpu dual-core memory ram size (gb) 1.5 rom size 16 gb sensors accelerometer, barometer, gyro sensor, geomagnetic sensor, light sensor, optical heart rate sensor, electrical heart sensor, bioelectrical impedance analysis sensor, hall sensor dimension (hxwxd) 41.5 x 41.5 x 11.2 mm battery capacity (mah, typical) 247 removable no typical usage time (hours) up to 40 hours