... polymer battery(3.7V,3200mAH)Stand-by time: 250 hoursTouch panel: 2.8-inch QVGA transmissive colorInput method: handwrite, keyboardCamera: 0 ... : 30days, sample time: 7daysC2020J Selling point: Java Secondary development, Touch panel, LCD screen, Personalized keys, Mobile phone, Camera, Support GPRS, HF RFID ...