R2 Smart Wireless Bluetooth V4.0 Tracker Finder Key Buckle Anti- lost Alarm Locator Tracker, Locator Tracker

Specification parameters:
1. Communication system: bluetooth version V4.0.
2. Compatible systems: Android 4.3 and iOS7.0 or above.
3. Effective distance: less than 10 meters.
4. Battery specification: CR2032.