Dimensions (mm): 41mm x 35mm x 10.7mm, 45mm x 38mm x 10.7mm Weight: 31g , 38.8g Connectivity: GPS + Cellular Processor: S7 SiP with 64-bit dual-core Storage: 32GB Battery: Faster charge time1 Water Resistance: Swimproof (water resistant 50 metres)2 Additional Features: Digital Crown with haptic feedback, Blood oxygen sensor, Electrical heart sensor and third-generation optical heart sensor, High and low heart rate notifications, Irregular heart rhythm notification