TREBLAB HD77 HD77 - Ultra Premium Bluetooth Speaker - Loud 360 deg. HD Surround Sound, Wireless Dual Pairing, Loudest Bass - 80 Hz to 16 kHz - Surround Sound, 360 deg. Circle Sound, TrueWireless Stereo - Battery Rechargeable

SHOCKPROOF AND WEATHER-RESISTANT - Water-resistant with IPX6 technology to protect from light rain and accidental splashes. Shockproof with rubber feet to protect from falls, knocks and drops. POWERFUL SOUND - Comes with 25W stereo sound and DualBass technology for strong, pure sound. TWS means you can connect two speakers to play together. Noise-cancelling technology means you can hear the music clearly over wind and background noise. LONG-LASTING BATTERY - High-capacity 5200 mAh battery with PlayXTend technology for 20 hours of playback time. Can also be recharged on the move using a powerbank. OUTDOOR SPORTS SPEAKER - The TREBLAB HD77 is an outdoor speaker that allows you to take your music with you anywhere you go. Use freestanding or attach to a backpack with the strap and carabiner.