1.Solution:Rockchip 2608A controller. 2.Screen:2.4 inch QVGA(320*240 pixels) TFT panel. 3.Capacity:Built-in flash memory, up to 4GB. 4.Memory Card Slot:Support Mini SD card, up to 2GB. 5.Power supply:Built-in Li-polymer rechargeable battery. 6.Play time:More than 5 hours. 7.Speaker:Built-in a hi-quality speaker. 8.Housing:Stainless steel. 9.Weight:70g. 110.Dimensions:92mm(L) x 50mm(W) x 12mm(H). 11.Saving power:Power off automatically according to your presets. 12.Transfer speed-USB2.0.