Android OSNetwork typeGSM Band2/3/8WCDMA Band1/5/8CDMA Evdo Rev.A 800MHzTD-SCDMA Band34/39TDD-LTE Band38/39/40/41FDD-LTE Band1/band3Processor: Qualcomm MSM8909Screen Size: 1.77”LCD Resolution: 128 x 160Internal Memory: 4Gb + 4GBAndroid version: 5.1.1Blutooth, GPS: YesBattery Capacity: 4800mAhBattery voltage: 3.7VMaximum TX power: 23-25dbm@all up bitsRX sensitivity: -106dbmStandby time: 69 hours (Approx)Audio transmission: 2W@10% distortionWorking temperature: -20~60CDimention: 105*53*32mmWeight: 280g