NUT F7X Smart Anti-Lost Device Bluetooth Two-Way Alarm Mobile Phone Key Wallet Anti-Lost Device Parameter: 1. Dimensions: 38.2x38.2x7.2mm 2. Standby time: 10 months 3. Battery model: CR2032 button battery 6. Reminder volume: 60-90 decibels 7. Compatible platform: IOS system, Android4.3 or higher system 8. With two-way anti-lost, anti-lost and anti-forget, one-key tracking, lost location, sharing management, network search, multi-task management and other practical functions, like a personal secretary, remind you to take your belongings at any time! 9. Adopt the low energy Bluetooth chip Nordic solution, stable performance, low false alarm rate, long standby time, easy to use, 10. NUT APP language adopts multi-language version, APP display language follows the phone operating system language 11. APP can be searched and downloaded in the Apple Store or Android Market, and installed and used for free The main function: 1. Two-way anti-lost: Connect the anti-lost device to the mobile phone through the APP software, and then bind the anti-lost device to items, such as hanging on valuables such as keys and wallets. When these items are about 10-20 meters away from you Safe distance, your mobile phone and anti-lost device will alarm to remind you that you forgot to bring something; 2. One-click search: Sometimes you can’t find the key or wallet when you go out, you can click the "Call" button through the mobile APP, the anti-lost device will make a sound, and you can easily find the key or wallet by following the sound; if you forget where you put your phone , You can call your mobile phone (except Mini) through the anti-lost device, no matter if your mobile phone is muted, vibrated or shut down, it will ring (note: mobile phones with Android 8.0 and above will not alarm, only vibrate), let you Find it easily and quickly; 3. Lost location: If your item has been lost and you missed the reminder, then the mobile phone APP will automatically record the location of the next disconnection from the item, and locate the lost lo