Feature:Built-in rechargeable lithium battery, a variety of charging methods.External memory: Supports up to 32GB TF card, and can also be used as Micro SD / TF card reader Support music files such as MP3, WMA format. Le can play 10 kinds of sound quality, perfect music enjoyment.The design is simple, refined and stylish.Note: include Memory card (Built-in test music You can delete and add at will)Product specifications:Standby time (hours): 48 hoursBattery capacity: 80 mAHeadphone jack: 3.5mmPlay time (hours): about 10 hoursMode of operation: keystrokeBuilt-in battery type: special lithium batteryWeight: 17.9 gramsSize: 10 x 2.5 x 1cmPackage Contents:1 * MP3 player1* Memory card1*Earphone1*charging cable