We are Shenzhen Ruifeng Huizhi Technology Co., Ltd. based inShenzhen, China. We are member of TradeKey.com since January, 2015.Our business is related to Consumer Electronics industry and wespecifically deal in Gps Tracker. Please find our product detailsbelow: SOS emergency call two way communication mini gps trackerwith GSM card with long life battery SOS emengency call two waycommunication mini gps tracker with GSM Card with long battery lifeRF-V16 mini gps tracker 1.Two Way communicate 2.SMS and phonealarm 3.Remote monitoring 4.SOS co... Home security GSM alarmsystem / GSM MMS PIR Motion sensor / gsm alarm security alarmsystem manual 1.Simple operation , without install 2.Four frequencyGSM location tracking , map query(universal) 3.SMS and phone alarmwhen door open / close 4.Remote listening function 5.Multiple touchalarm 6.Re... Thank you for taking time to go through our businessprofile. If there are any questions, inquiries or comments, pleasefeel free to contact us.