T&G DW12 Portable Mini Wireless Bluetooth Speaker Transparent Subwoofer Support TF Card Features: 1. Multiple playback methods: support Bluetooth TF card playback, allowing you to listen to your favorite music anytime, anywhere. 2. Unique mech design: With mech design, the unique mech elements make this speaker a unique decoration, beautiful and fashionable. 3. Transparent high-transparency PC shell: The high-transparency PC shell allows you to see the operation of the internal electronic components. At the same time, the transparent shell makes this speaker look full of technology. 4. Portable design: With a lanyard, it is easy to carry when going out, and can be hung on a backpack or put in a pocket. Parameters: 1. Product material: ABS 2. Bluetooth version: V5.1 3. Effective distance: 10M 4. Maximum output power: 5W 5. Battery capacity: 400mAh 6. Power supply mode: lithium battery 7. Signal-to-noise ratio: greater than 90dB 8. Speaker: 40mm 9. Frequency range: 100HZ-18KHZ 10. Battery charging time: 3 hours (5V1.0A input) 11. Music playing time: 4 hours 12. Size: 77x39.5x77mm Package list: - Bluetooth speaker x 1 - Charging cable x 1 - Sling x 1 - Instruction manual 1