5 PCS ZH-649 Sports Running Music MP3 Player, Support TF Card 1. Trendy shell, innovative ultra-thin design, ultra-small size. It weighs less than 30 grams and is simple, refined and stylish. 2. Supports digital music playback in multiple MP3 music formats. 3. It can be used as a removable flash drive to store MP3 songs or data anytime and anywhere. 4. Support TF memory card, up to 16GB, can be used as TF card reader. (not included) 5. It also has the functions of MP3 and removable storage disk. 6. Adopt USB1.12.0 interface, support hot plug, both plug and use 7. Built-in 90mah lithium battery, continuous playback for 3-4 hours without external power supply 8. Storage medium. No mechanical parts, anti-vibration, anti-electromagnetic interference. 9. Built-in high-energy rechargeable lithium battery, long standby time. 11. Stylish and compact design, beautiful and exquisite workmanship, good gifts. Specifications 1. Memory card type: TF card (not included) 2. Expansion card: Support 3. Operation mode: Press button 4. Interface: Mini USB 5. Headphone jack: 3.5 mm 6. Support audio format: MP3 7. Additional function: outside function 8. Battery capacity: 90 mA 9. Life time: 4 hours 10. Product size: 85x25x10 mm 11. Weight: 24 grams 12. Note: Only bare metal, no other items