Model AMOI N821 Smartphone Black Operation System Android 4.0 Screen 4.5" 5 Point IPS Capacitive Screen Resolution 960x540 Pixels CPU MTK 6577 1GHz RAM 1GB ROM 4GB Webcam Dual Cameras, front camera: 3.0MP, back camera: 8.0MP Wireless Wifi 802.11b/g/n 2G GSM 900/1800/1900 3G WCDMA 2100MHz G-sensor Support Bluetooth Yes GPS Yes, built in Power Battery 2050mAH Rechargeable Li-ion Battery Working Time Up to 3 Days Power Device AC Adapter Input 100/240V Device Specification Color Black Dimensions 1316710.5mm Net Weight 158g Software Support Office Support MS Office Word, PPT, Excel Email Gmail, POP3/SMTP/IMAP4 Others Gaming Support Multi-Media Video AVI, MP4, FLV, 3GP, MKV, WMV etc. Audio MP3, WMA, OGG, AAC, WAV FLAC etc. Picture JPG/BMP/PNG/GIF E-Book PDF, TXT etc. Ports 1 x Micro USB 1 x Earphone Jack What's in the box 1 x Cellphone 1x Battery 1 x Charger 1 x User's Manual 1 x Micro USB Cable 1-Year Manufacturer's Warranty: this warranty is offered directly by the manufacturer. Should the item become defective within the manufacturer's warranty period (physical damages and damages caused by incorrect usage excluded), customers may send the unit back to our Hong Kong office. We will help forwarding the item to the manufacturer for repair, and will look after the progress. The customer will need to cover shipping fees both ways.