This is a pre-owned device have been inspected and tested, which typically perform a full diagnostic test. wireless devices have batteries tested to have full 100% capacity relative to new at the time of sale.
gps + cellular. s4 sip with faster 64-bit dual-core processor
over 30% larger display and 50% louder speaker , 50% louder speaker
digital crown with haptic feedback. electrical and optical heart sensors.
improved accelerometer and gyroscope for fall detection. swimproof. watchos 7.3