Features:
1. SMS Tracking on Google Map.
2. Software that is supported by an Apple application named Tkstar (downloaded for free from iTunes) or Google Maps to ensure you can always monitor where the tracker is.
3. Protect child, the elder, the disabled and pet, etc.
4. Provide peace-of-mind for travelers by tracking suitcases and other important items while traveling.
5. A SOS system works if the SOS button is pressed, a "help me" text is sent to all authorised phone numbers and monitoring systems.
6. It can be used in vehicle rental management or fleet management.
7. It is waterproof, lightweight, small, and sleek design.

Specifications:

Network	GSM/GPRS
Band	850/900/1800/1900Mhz
GPS chip	UBLOX
GPS sensitivity	-159dBm
GPS accuracy	5m
Time To First Fix	Cold status  35-80s Warm status  35s Hot status  1s
Car charger	12-24V  input 5V   output
Wall charger	110-220V  input 5V   output
Battery	Chargeable 3.7V 1000mAh Li-ion battery
Standby	240hours
Storage temperture	-40°C to +85°C
Operation temperture	-20°C to +55°C
Item dimensions	50 * 50 * 20mm / 2.0 * 2.0 * 0.8in
Item weight	44g / 1.60z
Package dimensions	12.9 * 7.4*6.3 / 5.1*3.0*2.5in
Package weight	167g / 5.9oz

Note: 
1. Please charge 12hours at first use. 
2. Insert SIM card in right way. Please put the unit outside and make sure the trademark side facing up. 
3. Confirm your SIM card have calling, send SMS, GPRS function. 
4. Confirm your SIM card have enough balance (money). 
5. Confirm your SIM card can show caller ID and don not use the function of call forwarding. 

Package Included: 

1 X TKSTAR Tracker	1 X USB Data Cable
1 X Screw Driver (for sim-card installation)	1 X User manual ( English )

Picture details: