Specification: <br />Brand new <br /><br />Material: ABS+silicone <br /><br />Size: approx. 5.2 x 3.1 x 1.1cm <br /><br />4 colors for your choosing: black/red/green/white <br /><br />4.0 Smartphone (Andriod 4.3 version and up-grade version) <br /><br />Working distance: about 75 Feet (without barrier) <br /><br />Battery: CR2032 Lithium Coin Battery (included) <br /><br />Standby time: 6 month <br /><br />Connects up to 10 iTag unit <br /><br />App Name: iTracing (Free of charge) <br /><br />App language: English・ Chinese・ French・ Spanish <br /><br />Compatible Devices: iPhone 5S/5C/5/4S・ iPad 5th/4th/3rd gen・ iPad mini・ iPad Air・ iPod touch(5th gen)・Andriod<br /><br />Suitable for: wallet・ car・ kid・ pets・ bags・ suitcase or other belongings <br /><br />How to use: download an App iTracing (Free of charge)・open your bluetooth and connect to the tracker・ then you can use it<br /><br />Package included: 1pc x smart tracker (tracker only・ other accessories are not included) <br /><br />Note: <br /><br />Please allow 1-5mm errors due to manual measurement <br /><br />Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same