Screen size 1.28inch IPS InterfaceUSB 2.0 Camera 1.3 million pixels Body memory 192MB RAM+128MB ROM Screen material IPS Wearing style wristband Compatible system fully compatible Communication function support Menu language English and other languages Additional features: Step counting, social entertainment, health monitoring, tracking/alarm Wireless distance 5m (inclusive)-10m (inclusive) Battery capacity 500mAh Operation mode touch + button Product size 49.5×46×16.5mm Screen resolution 240*240 Wristband Material Silicone Strap Product weight 140 (g) Strap Size Single Size: Fits 150-200mm wrist circumference Function waterproof, taking pictures, intelligent reminder