SafeTrek Defender Spec. Download Guide Spec. Model : MSP580D Communication Module : 4G LTE Position Module : support GPS+GLONASS SIM : Support Micro Sim Card Battery : 800mAh / 3.7v Power Source : 2.85 m, 12V-36V vehicle power with 4.2V buck line Relative Humidity : 0 ~ 95% (noncondensing) Operating Ambient Temperature : 0℃ ~ 55℃ Nonoperating Temperature : -20℃ ~ 80℃ Dimensions : (L) 63 x (W) 46x (H) 12mm Weight : 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.