With two midrange speakers, two tweeters, and two external passive radiators, Turn1 provides a stereo sound performance that can produce up to 40-watts of powerful sound. The speaker has been tuned to be played outside, so even in open-air areas with wind or other noise, you’ll still hear your music come through loud and clear. Built-in Bluetooth® streaming and multi-unit paring connect up to two AD-SPK1 speakers so you can build your ideal portable sound system. Answer phone calls with the built-in mic for hands-free calling. From the poolside to the fireside, get uninterrupted music performance with waterproof protection (IPX67). A built-in, rechargeable Li-ion battery supports 12+ house of playtime for all your adventures. The auto power-off feature ensures efficient use of your battery. Get back to the performance with the included USB charge (four-six hours). Turn1 goes with you on every adventure, with a universal bracket (sold separately) that attaches to the inside bars of your Jeep® Wrangler. Once you get to your destination, remove the speaker from the brackets, and easily attach the included carry strap for on-the-go listening. Bluetooth® Version: 5.0 Transmission Distance: 33 feet Signal-to-Noise (S/N) Ratio: >70dB Frequency Response: 50Hz-20kHz Output: 36-watt RMS, 40-watts Peak Weight: 1730g (3lbs, 13oz) Product Dimensions: 280mm x 118mm x 120mm (11.02” x 4.65” x 4.72”) Micro-USB to USB Charge Bass Sound Dual External Passive Radiators Auto Power Off 3 ft Carry Strap Included Built-in Mic for Hands-Free calling True Wireless Stereo (TWS) Multi-Unit Pairing Waterprooft: IPX67 Aux Input: 3.5mm Audio Cable Input Charging Voltage: 5V/ 1.7A Charging Time: 4 – 6 hours Playing Time: 7 – 8 (at 70% volume); 12 – 14 hours (at 50% volume) 12+ Hours Playtime (varies by volume and level and audio content) Battery Type: Built-in Li-Ion Battery Capacity: 3600mAh Bluetooth® Wireless Audio Streaming