4G band selection: LTE FDD: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B28 / B66 GSM/GPRS/EDGE: 850/900/1800/1900MHz Specification Antenna:LTE Antenna Internal, GPS Antenna Internal color: Black material: plastic GPS Positioning Accuracy:5m-15m (Depending on GPS Signal) LBS Positioning Accuracy: ~200m (Depending on density of base stations) GPS Frequency:L1, 1575.42MHz C/A code Network:LTE/FDD, WCDMA,GSM, SMS GSM Frequency:850/900/1800/1900MHz GPRS:Class 12, TCP/IP LED Indicator:GPS-Blue; GSM-G reen Hot/Warm/Cold Start:Less than 3x, Less than 15s, Less than 60s Main PCB: LTE Module Chip solution: MCU and 4G communication module GPS sensitivity: -161dBm GPS position accuracy: 5m (in 3D positioning mode) Built-in Battery:Embedded 3.7V/150mAh battery for emergency alarm when removing main power Optional Accessories:Relay ,SOS. Work Current:Less than 30 mA Standby Current:Less than 15 uA IP Waterproof Level:IP65 Operating Voltage:9-60V DC Environment Temperature:-20℃ - 65℃ Environment Humidity:20% ~ 80% RH Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Note: Due to different production batches, the color of accessories is random. Package Contents: 1 x Car Tracker set Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.