... 4. Working voltage: 3.3V 5. Full Capacity with steable quality, not upgrade card 6. Warranty: 10 monthsAccessories Available: housing, ... card, card reader,holder and etc. Spare Parts Available: lcd/display, flex cable, trackball,trackpad,speaker,microphone, charging connecter,buzzer. Payment ... team of after-service to help you to solve the quality problems 4 GB TF/Micro SD Card high quality high speed