Specifications: Model Number: DM100 Type: On Wrist Smartwatch Function: Pedometer, Heart Rate Tracker, Message Reminder, Interactive Music, Calendar, Dial Call, Push Message, Alarm Clock, Answer Call, Date andamp; Time, Camera, Sound Recorder... Communication Program: 2G: GS: B2andB3andB5andB8 3G: WCDMA: B1andB2andB5andB8 TD-SCDMA: B34/39 4G: LTE-FDD: B1andB2andB3andB5andB7andB8andB12andB20 LTE-TDD: B38andB39andB40andB41(100MHz) System: Android 7.1 OS CPU Model: MTK6739 Quad-core RAMandROM: 1GBand16GB Screen Size: 2.86inches Resolution: 640 x 480p Screen Shape: Round Touch Mode: Multi-touch Camera: 5MP Network Mode: 4G Nano SIM Card Slot: Yes BT Version: 4.0 GPS: Yes APP Download Available: Yes Clock Interface: Selectable Recording: Yes Speaker: Yes Waterproof Grade: IP67 Waterproof Battery Capacity: 2700mAh Lithium polymer battery APP Support Language: English Watch Support Language: Chinese Simplified, Chinese Traditional, English, French, German, Spanish, Portuguese, Italian, Russian, Polish, Turkish, Korean, Hebrew, Indonesian, Vietnamese, Arabic, Persian, Thai, Hindi, Burmese, Bangladesh, Japan APP Name: WiiWatch 2 Case Material: Alloy Band Material: Silica Gel Color: Black Item Weight: 155g/5.45oz Package Size: 11.0 x 9.5 x 8.0cm/4.33 x 3.74 x 3.15in Package Weight: 302g/10.65oz Package List: 1 x 4G Smartwatch 1 x Charging Cable 1 x Screw Driver 1 x Screen Film 1 x User Manual (English / Chinese)