SOS button for help in case of emergency vehicle gps tracker tk108

Product parameter:
1.GSM/GPRS module: SIMCOM SIM900
2.Band: 850/900/1800/1900Mhz
3.Communication protocol: TCP/UDP
4.CPU: ARM7
5.GPS chip: SIRF3 Sensitivity: -159dBm Accuracy: 5-20m
6.Time To first fix Cold status 45s Hot status 1s
7.Wall charger: 110-220V input 5V output
8.Battery: 3.7V 860mAh Li-ion battery Standby: 250hours

9.Waterproof: IPX-6
10.Storage Temp: -40°C to +85°C

Packaging&Shipping:

Packing size: 212*129*59MM
N.W.:85G
Packing weight 360G
Charger:1
Instructions English :1
Magnet back cover:1

FAQ:

1. Q: Can I get some samples?

A: Yes,sample order is available for quality check and market test.
2. Q: What’s the delivery time?
A: usually below 100pcs is 3 days quick delivery.
3. Q: What's your payment terms?
A: PAYPAL , T/T, ALI -TRADE ASSURANCE
4. Q: Do you have the products in stock?
A: yes ,of course 
5. Q: Can I mix different models in one container?
A: Yes, different models can be mixed up in one full container.
6. Q: How does your factory do regarding the quality control? 
A: Quality is priority. We always attach great importance to quality control from the very beginning to the end of the production. Every product will be fully assembled and carefully tested before packing and shipping.