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Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Please Notice:This model is no platform，It can also be used via SMS Longitude and Latitude without platform.Technical parameter:1.GSM:850/900/1800/1900 Quad band2.GPRS: Class12， TCP/IP3.Working Voltage:9-24V DC4.Working current:≈ 22mA (12vDC)5.Working current: ≈12mA (24vDC)6.GPS locating time: Cold start≈ 38s(Open sky) ，Warm start≈ 32s，Hot start≈ 2s(Open sky)7.GPS Precision: 10m (2D RM)8.Working temperature: -20℃ +70 ℃9.Working humidity: 20%-80%RH10.Measurement: 87 (L)×43 (W) ×14 (H) mmDevice status indicators:1. Connect DC 9-24V power supply and the red LED will light continuously.2. The green LED glistens when searching the GPS signals. When GPS works， the LED lights continuously.3. The intermediate blue LED (GSM signal state)GSM signal is normal， blue LED light long bright. No GSM signal， the blue LED flashes.GPS LED not fixed， flashes(0.2 sec/2 sec)，Positioning long bright;GSM LED no signal， flashes(0.2 sec/2 sec)，Signal normal long bright;Power LED: long bright;All LEDS will turn off after 5 minutes. When there is a new call， the LEDs will relight and turn off 5 minutes later.Note:1) Please install the device in the hidden place as followings;Under Front windshield;In the front instrument panel;Under back windshield;2) Avoid being placed with signal radiators like reverse sensor ;3) The device has GSM antenna and GPS antenna inside. Please ensure the receiving side of the device is face up and without metal cover.