High Quality: Bluetooth 5.0 technology, low power consumption, button battery, standby time over 10 months, easy to replace. Two-Way Connection: Connect to your phone's Bluetooth function. When the Bluetooth range is exceeded, your mobile phone and the anti-lost device will alarm simultaneously. Service distance is approximately 10-25m (depending on internal and external factors). Dog Claw Design: Features a beautiful and modern appearance. Available in eight main colors (white, gray, dark blue, black, green, pink, red, and sky blue) to suit your preference. Widely Used: Ideal for pets, luggage, handbags, children, etc., to prevent loss and provide protection. This is a fantastic gadget that can help you search and find your items. Compatibility: When disconnected from your phone, you can view the map location. Compatible with iOS and Android 4.3 or later (requires Bluetooth 5.0). Material: ABS Size: 42x40x10mm Applications: Search Stack: Button Stack (CR2032) Quantity: 1 piece