Theviewing area stretches deep into the curved corners and is over 30% larger than the Apple Watch Series 3 display. 40mm, 44mm. Features. LTE and UMTS, Built-in GPS, GLONASS, Galileo, and QZSS, S5 with 64-bit dual-core processor, W3 Apple wireless chip, Barometric altimeter, Capacity 32GB, Optical heart sensor, Electrical heart sensor .

apple watch series 4 40mm display price