Description: The anti-lost device is a product based on the new Bluetooth 4.0 low-power technology. By using the "isearching" APP software to connect with mobile devices such as mobile phones via Bluetooth, it can connect users easily lost items and valuables (such as keys, Handbags, etc.) are bundled together to realize the functions of reminding the items to be lost and finding the mobile phone. It can also realize functions such as remote control of photographing and recording (for example, group photos at parties, selfies, etc.). Portable Size：Our key finder is very convenient to carry. Available in 4 stylish colors.Phone，Key, Bag,Item, Umbrella，Pets Finder.It will alert you when you go out of range, so you don't have to worry about leaving without the things you need. Easy to Use: Press the button for a few seconds.It will turn on after you hear two beeps. Then use cellphone's Bluetooth to search and connect the device, if you lost your cellphone, double press the tracker button, your phone would alarm.One phone can collect up to 6 trackers. Positioning and tracking: The current position of the object can be checked on the mobile phone, and the last remaining position can be checked after disconnecting. (last lost location shows on the map, not GPS). Disconnecting Attention: The key finders and cellphone would alarm together when disconnecting, both cellphone and item finders would ring together and last about 10 seconds, this function could be turned off in setting. Specification: Wireless distance: 25 meters Product material: ABS Product size: 38*38*7mm Power supply mode: button battery (CR2032) APP software: isearching Compatible platforms: ANDROID, iOS Package includes: 1*Anti-lost device 1*lanyard 1*Instruction