Product features: 1. Bluetooth 5.0 wireless technology, voice calls, one touch free hands; 2. TWS+ dual machine series, using Bluetooth can connect two speakers in series, super bass, immersive effect; 3. Seven-color dazzling color gentle breathing lamp, a variety of changing modes; 4. Built-in 1000mAh large capacity battery, super long life, enjoy listening; 5. Small size and large capacity, easy to carry, suitable for outdoor play; 6. Support a variety of platforms and devices, and a variety of connection methods, easy and portable. Product specifications: 1. Bluetooth version: 5.0 2. Transmission distance: 10m 3. Battery capacity: 1000mAh 4. Battery voltage: 3.7V 5. Charging voltage: 5V 6. Frequency response: 20Hz-20KHz 7. TF card capacity: 32GB max 8. Signal-to-noise ratio: 275dB 9. Playing time: 3-4h 10. Speaker size: S-40mm, L-52mm 11. Speaker power: 5W 12. Product size: S-64x84mm, L-80x117mm 13. Net weight: S-167gL-277g Packing list: - Bluetooth speaker x1 - Charging cable x1 - Users Manual x1