Bluetooth LE anti lost.
Please use it with 616 or 621 of our company's product. The mobile or tablet must need Bluetooth LE and android 4.3 or above.For exapmle :
SAMSUNG:Galaxy S4,Galaxy S5,Galaxy Note3 ,Galaxy Note4;
XIAOMI:MI 3,Mi 3W;
HUAWEI:hwB199,hwC8816D.