Bluetooth Version: Bluetooth 4.0 Waterproof: Yes Camera: No Alert type: Vibration Screen: IPS Screen resolution: 160 x 80 Screen size: 0.96 inch Battery Type: Li-polymer Battery Capacity: 90mAh Standby time: 3 - 7 days Power: Rechargeable Power People: Male watch, Female watch Functions: Alarm, Pedometer, Sleep monitoring, Weather, Heart rate measurement, Sedentary reminder, Information Pushing The shape of the dial: Rectangle Case material: Alloy Band Material: Silicone Compatible OS: Android, IOS Compatibility: Android 4.4 / iOS 9.0 and above system Language: English,French,Spanish,Russian,Arabic,Japanese,Korean,Simplified / TraditionalChinese The dial thickness: 1cm/ 0.39 inch Dial size: 0.96 inch The dial diameter: 2.3cm/0.91 inch The band width: 1.8cm/0.71 inch Product size (L x W x H): 24.50 x 2.30 x 1.00 cm / 9.65 x 0.91 x 0.39 inches Package size (L x W x H): 9.60 x 9.60 x 4.00 cm / 3.78 x 3.78 x 1.57 inches Product weight: 0.0230 kg Package weight: 0.1050 kg Package Contents: 1 x Smart Watch, 1 x Charging Clip, 1 x English and Chinese User Manual.