Bluetooth Anti-loss Device Two-way Find Keyring Bag Finder Multi-color Extra Long Waiting Finder Bluetooth Anti-loss Device Two-way Find Keyring Bag Finder Multi-color Extra Long Waiting Finder Specification: Product Name:Bluetooth Item Finder. Product color:Black. Product material :ABS. Bluetooth version :4.2.Sound :90 decibels. Sound distance :10-15 meters. Search distance :164 feet /50 meters. Power Supply:Replaceable CR2032 (one piece). Disconnected standby:560 days. Connected standby:180 days. Operating voltage:DC-3V. Standby current:<40uA. Alarm current:<12mA. Low voltage detection:Y. Bluetooth band:2.4G. Bluetooth distance:40 meters. Operating temperature:-10degreeC-70degreeC. Product size :3.5x3.5x1cm(1.38x1.38x0.39 in). Package size :11.5x11.5x3.5cm(4.53x4.53x1.38 in). Pack weight:52g / 0.11lb. Feature: [Anti-loss device] Connect mobile phone through Bluetooth and App. You can connect keys, wallets, glasses, cell phones, dog collars, or other items that are easily lost. The Key Finder locator will help you not waste time searching for things. [One-click Search] Key finder that can make music to help you quickly find misplaced items; Tap "CALL" on the App and let your keyfinder ring to quickly find anything. [Long Battery Life and support ] Each battery lasts for 12 months. Use replaceable battery CR2032.[Look for nearby] When your partner is within 200 feet, use the app to call him and help you find it. [Location mark] When the connection is broken, the application automatically records the location to find the missing item. Instructiongs: Because the size of the product is measured manually, there may be errors. Package Contents: Loss preventer x 1 Instruction x 1 Product Name:Bluetooth Item Finder. Product color:Black. Product material :ABS. Bluetooth version :4.2.Sound :90 decibels. Sound distance :10-15 meters. Search distance :164 feet /50 meters.