BOOMIN is a Bluetooth V4.0 compliant, low energy Bluetooth mini size speaker with incredibly big and clear sound and bass. It is compatible with most cell phones, tabs, PCs, notebooks and most devices with built-in Bluetooth. BOOMIN comes with output power 3 watts, its classic shape matches well with the carefully chosen anodized aluminum alloy colors, it also comes with a detachable leather strip for easier carrying. With built-in micro-phone, it can be used as a portable speaker phone. The built-in battery can support up to 10 hours talk time and 3-5 hours continuous music play. It only measures 55.6(W)73(L)55.6(H)mm, compact in size but with great CD like music quality (i.e. aptX music supported). Features: - Bluetooth V4.0 Low energy technology Removable leather strap suitable for indoor and outdoor use Compatible with all laptops and PCs (Windows 7, Vista, XP, Mac OSX 10.5 and higher) Pairing two phones at one time (ie. Multi-Point) Wireless range : at least 10 meters (33 feet) Proprietary acoustic drivers (stereo pair) and proprietary passive bass radiator Support voice prompting, answering, rejecting and hanging-up calls High-grade, traditional classical style made of Anodized aluminum-alloy body. Battery App Meter - displayed battery life on iOS devices Assured high CD quality music (ie. apt-X) Bi-directional noise reductor Built-in microphone Frequency response : 60Hz - 20KHz Support A2DP/ AVRCP/HFP Support APT-X/ AAC/ MP3 decoders Micro USB charging cable for recharging Battery Capacity 650mAh / 3.7V / 2.4Wh Dimension 55.6 x 73 x 55.6mm Speaker 3W x 1 Call Time 9 hours Audio Play 9 hours Standby Time 45 days Weight appx. 180g