... turn interface,6 and the automatic test battery indicator,7. Built-in polymer lithium battery, the battery can be via USB 2 hours continuous ... , antistatic, moistureproof, When the accurate!12 imported Japanese machine, watch battery used 2 years,13. The other is equipped with small ... normal ac socket,14 USB mobile storage function, anytime "wear" material. New Fashion MP3 watch with camera 640*480