• Bluetooth chip: Jerry AC6905A
• Bluetooth version: V4.2
• Channel system: stereo (two-channel)
• Battery capacity: 4000mAh/3.7v
• Drive unit : 66mm/2.60inch(approx.)
• Speaker power :8W*2
• Rated power: 16W
• Frequency response range: 20Hz-20KHz
• Product color: black / red / green
• Charging time: 4 hours
• Music duration: 12 hours
• Support agreement: A2DP/AVRCP/HSP/HFP
• Input charging standard: DC5V, 600mA
• Bluetooth operating frequency :100Hz-20KHz
• Best call distance: <1M/3.28ft(approx.)
• Maximum transmission distance: about 10M/32.81ft (barrier-free space)
• Voice prompt: Support
• Multi-point connection: Support
• Manual: Chinese and English

Loud sound: The sound is very loud, and the speaker has a high-resolution sound system. it can be used as a microphone to listen to music, which is very suitable for listening to music at home or in the office.
Waterproof: The waterproof speaker is made of high-quality abs material, which can effectively prevent rainwater from entering and protect your device.
Bluetooth: Wirelessly stream music from your smartphone, tablet, or other bluetooth-enabled devices with a built-in microphone.