New GF21 GPS Tracker Car Tracker Device Voice Control

Screen size: no screen charging input: 5v special feature: remote control gps type: gps tracker battery life: 30 hours & up model: gf21 communication frequency: 850/900/1800 / 1900mhz gps module: yes project type: gps tracker positioning method: wifi + lbs + gps platform view: sms + app + computer working temperature: -20-85 celsius/ -4-185 celsius colour:black material:plastic size:43*26*13.5mm