screen size 1.44 physical dimension 43.5*36*12.3mm Material plastic battery capacity 50mAh product weight Net weight 27g, gross weight 41g Body memory 32MB wearing method Wristband Operation method Touch interface USB 2.0 Wireless distance 5m (inclusive)-10m (inclusive) Communication function not support Wristband material TPU Additional features Step counter, smart reminder, remote control selfie, healthy