Features : Memory: 1+16/3+32 storage,Larger storage space, faster read speed * OS: Android 7.1. The latest Android system for watch, fastest processing speed, you can download more applications as you like * Connection: WIFI,GPS,GSM,Bluetooth * WIFI: both Support 2.4G and 5G WIFI You can use 2.4G or 5G WiFi because it supports both * GPS: GPS support, capacitable with GLONASS Not only can you use GPS, it is also compatible with Glonass. You will never get lost again. * Displayer: 2.86 inch IPS full mount screen 480*640 resolution A large enough and clear screen for a better view of the world * 500W pixel front camera Make video calls more convenient. Online communication, at your fingertips * Capacity: 2700 MAH Ploymer Li-Battery This is probably the largest watch battery available, it can help you extend the time of your watch. Specifications : Band Frequencies : 2G GSM : B2 (1900), B3 (1800), B5 (850), B8 (900)MHz 3G WCDMA : B1 (2100),, B2 (1900), B5 (850), B8(900)MHz 3G TD-SCDMA : B34 (2100), B39 (1900)MHz 4G LTE-FDD : B1 (2100), B2 (1900), B3 (1800), B5 (850), B7 (2600), B12 (700), B20 (800)MHz 4G LTE-TDD : B38 (2600MHz), B39 (1900), B40 (2300), B41 (100)MHz You need to use a sim card that matches the above bands so you can enjoy the convenience of wireless networking System: Android 7.1 OS CPU Model: MTK6739 Quad-core RAM+ROM: 1GB+16GB, 3GB+32GB (Optional) Screen Size: 2.86inches 640*480p Touch Mode: Multi-touch Brand Name : JingTider DM100 4G Smart Watch Camera: 5MP Network Mode: 4G Nano SIM Card Slot: Yes BT Version: 4.0 APP Download Available: Yes Clock Interface: Selectable 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