Characteristics: gemstone cutting surface: small size and fashionable, easy to carry. Equipped with an adjustable collar, comfortable and convenient to wear. IP67 Waterproof: It is waterproof and suitable for use in a variety of environments. Waterproof Magnetic charging: very practical. Pet Tracker can locate your pet anywhere, you can see the pet's location and movement to your phone. Specification: Shell material: ABS Color : blue Battery: built-in 500mA polymer battery; GSM: 850/900/1800 / 1900mhz (only support 2G network) Waterproof rating: IP67 GPS positioning accuracy: 10m Working voltage: 5V Size: Approx. 5.33 * 2.9 * 2.3cm / 2.1 * 1.1 * 0.9in Weight: approx. 123g / 4.3oz Package List: 1 * pet tracking collar; 1*USB cable 1 * User Manual 1 * dog collar; Note: 1. Only support 2G network, need to connect 2G network nano sim card.