Features: This loss device is a product based- on GPS-positioning technology. Wide applicability and anti-loss.. The tracker is small in size and lightweight, you can bring this anywhere to track your things. Waterproof reaches IP65 level. Long standby time- of 365 days. Global positioning, anytime- navigation. Privacy encryption. Through the use of APPlication software and mobile- phones and other mobile devices for GPS-positioning connection, it can bundle the items and valuables (such as keys, handbags, etc.) that users are easy to lose together, and realize the functions of loss reminder. Specifications: Material: ABS- Size: Approx.4 3.5x0.85cm/1.57x1.38x0.33inch Color: Black, White (optional） Package Includes: 1x Tracker Device note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.