The pet tracker is waterproof, which makes it work normally even in the pool. And the adjustable strap will make it easy and comfortable to wear. The GPS tracker can be used to precisely position and against loss. You can get alerts sent to your phone immediately if your dog ever gets out unexpectedly. It is constructed of ABS material. Your pet will feel comfort even wearing it for long periods of time. The length of this pet tracker is 5cm, the width is 3cm and the height is 2.5cm. It is suitable for your pets, kittens, puppies, vehicle, the elderly, children, etc. Item Name: Pet Tracker Material: ABS Model: G12 Memory: TF(M) GPS Positioning Accuracy: 5-8 (m) Alarm Mode: Vibration Alarm, SOS Alarm, Mobile Alarm Battery Capacity: 500mAh (Included) Battery Life: 240H Waterproof Function: Yes Antenna Type: GPS/WiFi/AGPS/Beidou Satellite/LBS External Power Supply Form: USB Maps Feature: for Google Charging Mode: Magnetic Contact Charging Features: Light Indication, Escape Alerts, Adjustable Neck Circumference Size Details: L: 5cm/1.97", W: 3cm/1.18", H: 2.5cm/0.98"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Pet Tracker