The Y669 Bluetooth speaker is waterproof and outdoor. 1. EDR and Bluetooth V5.0 2. Bluetooth/AUX 3 play mode Power of speakers: RMS8Wx2+15Wx1 4. TWS surround sound effect and dual machine interconnection 5.31 watts of output power and two speakers 6. Capacity of battery: 2200mAh/7.4V 31W 7. 12-hour workday Charge time: roughly four hours 9. Product color: high power output, blue, camouflage, and black 10. Waterproof level IPX7 11. Distinct 2.1 speakers One 15W low frequency speaker and two 8W mid-high frequency speakers 12. Authentic 30w stereo effect sound, similar to Bose headphones System of tracking: Stereo Two Sound Tracks 2200mAh is the battery's capacity. Units of drivers: 43+6Ω8W*2 pieces +4Ω15w*1 pieces Impedance: 4Ω, 6Ω Power rating: 31 watts 8W*2/15w*1 driver power; black color 4 hours for charging Talk duration: 12 hours 12 hours of music playback Bluetooth Protocol: HFP, HSP, AVRCP, and A2DP Range of frequencies: 100 Hz to 20 kHz Voltage input: DC5V–500mA The Bluetooth frequency range is 2.4GHz to 2.480GHz. The ideal talking distance is approximately 1M. The transmission distance is 10M in barrier-free space.