• TWS technology: TWS sync 2 units together, if you buy 2 pcs, you can enjoy stereo sound with TWS
• 20W dual speaker combination, larger and more powerful sound field
• IPX7 waterproof provides protection safeguards against rain, dust, snow, and spills. Get incredible sound at home, in the yard, or anywhere else imaginable
• 50% volume can be played continuously for 24 hours, and can be used as a mobile power bank to charge the phone
• Support NFC touch connection technology, 18m wireless transmission, support hands-free call
• Accurately restore every note, high-frequency details, natural mid-frequency, deep dive in low-frequency
• Multiple play mode: Bluetooth wireless mode, USB U DISK Mode or 3.5mm Aux Mode
• Equipped with portable buckle and lanyard, the speaker can be easily attached to the backpack

Specifications:

• BT version: V4.2+EDR
• Material: ABS + Silica gel
• Power: 2*10W
• Battery: 3.7V/3600mAh         
• Distance: 18m (unblocked)
• Charging time: 2.5 hours
• Waterproof: IPX7
• Diaphragm size: 88*40mm
• Distortion: ≤1%
• Frequency: 80Hz~18KHz
• Input: DC 5V/1.0A
• Drive unit: 4Ω 53mm
• Output: DC 5V/1.0A