Operation System: Android OS, very easy to use. Display Size: 6.1 Inch Big Touchscreen. Display Quality: IPS LCD. SIM: Dual SIM card (2 Micro Sim Cards). Frequency Band: WCDMA900/2100& GSM 850/900/1800/1900. Internal Memory: 1GB RAM + 4GB ROM. External Memory: support up to 32 GB micro SD card (T-Flash card, Not included). Camera: rear camera 5.0 MP with flash led + front camera 2.0 MP. Battery: 3800 mAh lithium battery. 1 x Charger (UK). 1 x USB Cable. 1 x Transparent Case. 1 x User Manual (English).