Hardware Brand Elephone Bluetooth version Bluetooth 4.0 Waterproof Rating IP53 Waterproof Yes Functions Bluetooth calling Phone call reminder Health tracker Sedentary reminder，Sleep monitor，Pedometer Remote Control Camera remote Other Functions Alarm Alert type Vibration，Ring Basic Screen IPS Battery Capacity 210mAh Dial and Band Shape of the dial Round Case material Stainless Steel Band material Leather Features Compatible OS Android，iOS Compatability Android 4.3 \/ iOS 7.0 and above system Language English Weight and Size Dial size 4.1 x 4.1 x 1.0 cm \/ 1.61 x 1.61 x 0.39 inches Product size(L x W x H) 21.000 x 4.100 x 1.000 cm \/ 8.268 x 1.614 x 0.394 inches Package size (L x W x H) 20.000 x 20.000 x 4.500 cm \/ 7.874 x 7.874 x 1.772 inches Product weight 0.130 kg Package weight 0.635 kg Package included 1 X Elephone W2 Smart Watch 2 X Button Battery 1 X English and Chinese Manual 1 X Screwdriver
https:\/\/drive.google.com\/file\/d\/0B3kBxc-YfJAuNklSMTlrWmYyQms\/view?usp=sharingDear customer， you can download the app following the link.