CPU chip: MTK6261 Screen: 1.44-inch color touch screen Touch TP: capacitive touch screen Network support: mobile and unicom 2G network Camera: 80 megapixels GNSS: GSM Battery capacity :400 mah Location inquiry: install mobile APP software Operating temperature: 0 ~40°℃ Photo taking: support Album: support Two-way calling: support USB interface: supports USB 1.1FS Number of keys: side key *1 screen virtual key *1 Watch strap: environmentally friendly silica gel