Above IOS 9.0 and Android 5.1. Standby: 5-7 days, Daily using time: about 2-3 Days.
TDD LTE: B38(2600MHz), B39(1900), B40(2300), B41(100) FDD LTE: B1(2100), B2(1900), B3(1800), B5(850), B7(2600). B8(900), B12(700), B17(700), B20(800).
TD-SCDMA: B34(2100), B39(1900) WCDMA: B1(2100), B5(850), B2(1900). GSM: B2(1900), B3(1800), B5(850), B8(900). 2.4GHz/5GHz 802.11 a/b/g/n. Smartwatch x 1, Charger with dock×1, User Menu x 1, Protective film x1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size. We offer a 30 days return guarantee. If you are not satisfied with the item, you can return it within 30 days after item received. We will try our best to resolve the issues. Please give us the opportunity to resolve any problem. This item is in the category "Cell Phones & Accessories\Smart Watches". The seller is "ihop59" and is located in this country: CN. This item can be shipped worldwide.