... Color available: silver,red,blue,white and black Card mp3 player Technical SpecificationRead speed:SLC5.5 ~ 6.0 MB/S MLC3 ... ,4GB,8G,16G,32G (Optional)BatteryLi-polymer rechargeable battery,5 - 7 hoursPower voltage: 3.7V/400mAh Li-ion (rechargeable) Sampling rate ... or misusage). Customers are responsible for return shipping to us with proper packaging, and then we would be responsible for resending ...