SafeTrek Defender Spec. Download Guide Spec. Model : MSP580DCommunication Module : support UMTS/HSUPA/HSDPA/GSMPosition Module : support GPS+GLONASSSIM : Support Micro Sim CardBattery : 800mAh / 3.7vPower Source : 2.85 m, 12V-36V vehicle power with 4.2V buck lineRelative Humidity : 0 ~ 95% (noncondensing)Operating Ambient Temperature : 0℃ ~ 55℃Nonoperating Temperature : -20℃ ~ 80℃Dimensions : (L) 63 x (W) 46x (H) 12mmWeight : 38g Download Please use Google Play (Android) or App Store (iOS) and search “traceez icar” or use the phone to scan the QR code here for download. Guide Protect your car never rest.