The Voombox Outdoor is rugged, water resistant, and built for the outdoors. It has an advanced audio performance that delivers a full-range listening experience. The 12-hour rechargeable battery gives you non-stop music from dusk till dawn. The Voombox Outdoor connects wirelessly to your Smartphone, tablet or other Bluetooth device using the latest 4.0 Bluetooth technologies. The Voombox also has a built-in microphone to make and take calls wirelessly on your own or for a conference call. Some of the product features are booming dual speakers, wireless play from up to 10 meters away, built-in microphone for hands-free calls, 12-hour rechargeable battery and sturdy design built to last. Voombox Outdoor product specs are driver size of 2-inches x 2-inches, output power is 7.5 W x 2, speaker dimensions are 165L x 52D x 70 H (mm), signal to noise rate is ≥75dB, battery capacity is 3200 mAh, battery voltage is 3.7 V, battery charge time is 3 to 4 hours, wireless range is up to o10 meters, Bluetooth compliant is Bluetooth 4.0, Bluetooth profile support is A2DP stereo, talk time is up to 12 hours and microphone sensitivity is -40db. The Voombox Outdoors includes (1) Voombox Outdoor, (1) wrist strap, (1) auxiliary connection and (1) micro-USB charging cable.