specs

RF frequency: 869MHz (EN-300-220, Class 1)
SIM card: Support micro SIM 1.8V and 3V
4G/LTE frequencies: B1 (2100MHz), B3 (1800MHz), B7 (2600MHz), B8 (900MHz), B20 (800MHz), B28 (700MHz)
3G frequencies: B1 (2100MHz), B8 (900MHz)
Power: 3.7V, 800mAhr rechargeable lithium battery
Battery life of up to one week
Operating temperature -10°C ~ +45°C
Relative humidity up to 85% (non-condensing)
Dimensions: 41.5 x 71.2 x 23.3mm