Specification: Item Type: Anti Lost Device_x000D_Model: W8_x000D_Material: Silicone, ABS_x000D_Bluetooth: 4.0_x000D_Support System: for iOS7.0 or Above, for Android 5.0 or Above, Requires Bluetooth 4.0 Standard_x000D_Supports Bluetooth Low Energy Technology (BLE)_x000D_Support 2 Way Alarm_x000D_Frequency Range: 2.42~2.480GHz_x000D_Receive Sensitivity: -94dBm_x000D_Working Voltage: 2.73.2V_x000D_Working Environment: -2070_x000D_Input: 5V/1A_x000D_Output: 34Hz-70KHz_x000D_Built in Battery: 100mAh Lithium ion Battery (Battery Included)_x000D_Charging Time: About 30 Minutes_x000D_Duration: 150 Hours Features: 1PURPOSE: Smart Item Locator can connect user's easily lost items and valuables together and works with smartphones to prevent loss. Compatible with for iOS and for Android. 2CAMERA FUNCTION: Remote control for smartphone camera, wireless Selfie for self portrait. Bluetooth remote, one click photo, click the anti lost device to take a photo. 3REAL TIME POSITIONING: Bluetooth anti lost device to prevent lost, with "wrist strap" accessories, real time positioning of children and the elderly to prevent lost. 4POWERFUL FUNCTIONS: The Bluetooth locator supports one key finding objects, light and portable, two way search, accurate positioning, one key photography, and disconnection reminder. 5ANTI LOST FUNCTION: The smart two way bluetooth alarm can provide the last seen anti lost drop location on the map to help you retrieve the item. PackageList: 1 x Item Locator 1 x Wrist Strap 1 x Lanyard 1 x Charging Cable 1 x Manual