Fangrui Product Details 1.this Tracking Tag Easily Connects The Card To Your Device. The Left-behind Reminder Of Our Tracking Tag Ensures You Forget Your Belongings Again. 2. If You Leave Your Tracked Item Behind, Your Smartphone Send You A Notification To Remind You To Retrieve It Before Its Too Late. 3. The Tracker Tag Includes A Built-in Speaker That Allows You To Easily Find Your Belongings Within A Bluetooth Range Of Up To 164 Feet. 4. You Can Share Your Tracking Tag With Up To 6 People, Allowing Them To See The Location Of The Item Without Receiving Tracking Notifications. 5. This Is For Sharing Travel Essentials With Family, Friends Or Colleagues While Maintaining Privacy And Control Over Your Tracking Data. Battery:cr2032 Working Voltage:dc 3.0v Wireless:ble 5.2 Wireless Distance:40m(open Visual Distance) Buzzer:built-in 75 Db(at 10cm) Working Temperature:-5c To 45c(23f To 113f) Working Humidity:(no Condensation) Colour:blue Material:abs Package Contents: 1 X Anti-lost Positione