Get that big, bassy stereo sound - all from one little speaker. Tap the Outdoor Boost for audio that’s specially tuned for the great outdoors. Check out the new EQ mode specially designed for crisp, clear vocals, so podcasts sound great. WONDERBOOM 4 bangs longer with 14 hours of playtime. So, you can soak up every moment and keep the party going. The awe-inspiring IP67 rating gives WONDERBOOM 4 the durability to withstand dust, dirt, and water. It’ll even float in water. Take it to the pool, beach, trail, or shower. All you gotta do is pair up two. Press once to double up. Press again for a full two-channel stereo assault - that’s left and right channels blasting from each respective speaker. (Doesn’t connect with WONDERBOOM 1,2, BOOM, MEGABOOM, or HYPERBOOM) It’s built to take 5-foot drops*. And with 40 meters of wireless range, you’ve got freedom to explore - even when the road gets tough. (*Drop-tested from 5 ft / 1.5m). In one tap, the WONDERBOOM 4 enables quick, effortless Bluetooth pairing with your Android* devices. (*Android phones running Marshmallow and above/6.0+) Plastic parts in WONDER¬BOOM 4 include a minimum of 31% certified post-consumer recycled plastic* by weight. “Post-consumer” means it’s made with plastic sourced from end-of-life electronics. So, it’s literally the life of the party. (*Excluding packaging) Technical Specifications: • Power - Rechargeable lithium-ion battery for up to 14 hours of battery life between type-c USB charges. * Actual battery life will vary with use, settings and environmental conditions. • 360 Degree Sound - Maximum sound level: 86 dBC (normal) and 87dBC (outdoor). Drivers: two 40 mm active drivers and two 46.1 x 65.2 mm passive radiators • Wireless Capabilities – 40m range. Connect up to two source devices at the same time and wirelessly play (stream) to 2 WONDERBOOM 4 speakers from one source. • Compatibility - For audio playback: smartphones, tablets and other devices that support Bluetooth [Advanced Audio Distribution Profile (A2DP)]