Techcomm g900 gsm unlocked kids smartwatch with gps and lbs. tracking, pedometer, sleep monitor, geofencing, find watch and anti take-off alarm disclaimer: The watch requires an activated gsm micro sim card with voice and data from any gsm carrier in the usa or abroad, such as T-Mobile, h20, metro pcs, prepaid gsm carriers, etc. The child cannot go online from the watch, the data is only for the parent to set up and monitor the watch remotely. The watch is not compatible with any cdma networks (such as sprint and Verizon), and it is not compatible with at&t. Sim card is not included. Features: - Compatible with iOS and android - gsm unlocked for call and text - for your childâs safety, use the app to register up to 10 phone numbers allowed to call the watch. This feature helps to avoid calls from strangers, telemarketers, etc. - Location: Gps/ agps, lbs. - 3-axis g-sensor - remote monitoring - anti take-off alarm - pedometer - sleep monitor - geofencing - history tracking - alarm clock - find watch feature - multi-language support specifications: - Processor: Mtk2503, 260 mhz - screen: 0.96" (not touch screen) - gsm / gprs: 850/900/1800/1900 - micro sim card - battery: 400mah, lithium-ion - standby time: 3 days - product dimensions: 1.97" x 1.3" x 0.59" - weight: 1.38oz package includes: Smartwatch, usb cable, and user manual. Warranty: 1 year. .