WK D28 Outdoor Portable Handheld Bluetooth Speaker

1. Rated power: 40W 2. Battery capacity: 7.4V 3600mAh 3. Frequency response: 50Hz-15KHz 4. Power supply: DC 5V 1A/2A 5. 40W woofer, creating a powerful bass effect 6. USB input and output port, can be used as a power bank 7. Bionic eagle eye, pulsating breathing light 8. Up to 6 hours of battery life 9. Support wireless dual channel function, 2 speakers are connected in series to create a more shocking sound experience 10. Speaker size: 3.5 inches*2 11. Product size: 390x135.4x173mm