Item Type: Anti Lost DeviceModel: W8Material: Silicone, ABSBluetooth: 4.0Support System: for iOS7.0 or Above, for Android 5.0 or Above, Requires Bluetooth 4.0 StandardSupports Bluetooth Low Energy Technology (BLE)Support 2 Way AlarmFrequency Range: 2.42~2.480GHzReceive Sensitivity: -94dBmWorking Voltage: 2.73.2VWorking Environment: -2070Input: 5V/1AOutput: 34Hz-70KHzBuilt in Battery: 100mAh Lithium ion Battery (Battery Included)Charging Time: About 30 MinutesDuration: 150 HoursPackage List1 x Item Locator1 x Wrist Strap1 x Lanyard1 x Charging Cable1 x Manual1PURPOSE: 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.