T&G TG664 LED Portable Subwoofer Wireless Bluetooth Speaker Features: 1. Bluetooth 5.3 wireless technology, voice calls, one-button hands-free. 2. TWS dual speakers can be connected in series. Using Bluetooth, two speakers can be connected in series to produce super bass and an immersive effect. 3. LED breathing light, four-color colorful and gentle breathing light, multiple changing modes. 4. Built-in large-capacity battery, long battery life, enjoy listening. 5. Small size and large capacity, easy to carry, suitable for outings. 6. Supports multiple platforms and devices, and multiple connection methods, making it easy and portable. Specification: 1. Bluetooth specification: V5.3 2. Audio noise ratio: greater than or equal to 85db 3. Transmission range: 10M 4. Battery capacity: 1200mAh 5. Built-in voltage: 3.7V 6. Playing time: about 2H (varies depending on audio content and volume) 7. Speaker specifications: 52mmx1 8. Speaker power: 4 Ohm10Wx1 9. Frequency response: 120Hz-18KHz 10. Size: 88.5x93.5x107mm 11. Weight: about 442G 12. Charging input: 5V500 mA packing list: 1. Bluetooth speaker x 1 2. USB cable x 1 3. User manual x 1