Waterproof Built-in 10000mAh battery, standby time up to approximately 150 days Powerful magnet for easy installation Lifetime free web tracking Dimensions: 90mm x 72mm x 32mm (3.54 inch x 2.83 inch x 1.26 inch) Real-time tracking Functions as call ID positioning in areas with no signal View Google Maps on mobile device screen Movement alert, over-speed alert, geo-fence Synchronization with tracker client software on PC Check route history Color: Black Material: ABS Note: Accessories colors are random; no specific color requests can be accommodated Package Contents: 1 x GPS tracker kit Only the items listed above are included; other products are not included Note: Light reflection and differences in display screens may cause slight variations in the color of the item shown in the picture compared to the actual item Measurement tolerance: +/- 1-3 cm