The ADCOM Bluetooth Speaker combines high end stereo sound with portability, letting you enjoy your music wirelessly anywhere you want. Featuring 3 watt speaker cavity for excellent sound, this tiny but powerful speaker can fill any room with rich audio. Bluetooth connectivity allows you to wirelessly play and control your music from Bluetooth devices and take calls hand free directly through the speaker. A built in rechargeable battery lasts for up to 4 to 5 hours per charge, so you can enjoy your music all day. The Dgb Boom measures approximately 2.3 x 1.9 inches. Use it at home, take it on vacation, enjoy it while camping, or set it up any other place you want to play your favorite music. The Dgb Boom pairs instantly with Bluetooth devices like smartphones, Tablets, and computers, letting you send your favorite songs wirelessly to the speaker. Change tracks and adjust volume from your Bluetooth device, or use the control buttons located on the speaker. Check the speakers battery status on your iPhone. When the battery is low, the speaker will give you an audible warning. Also comes with the inbuilt FM tuner to listen to the latest tracks. The speaker also gives vocal signals to easily navigate through the various modes and the status of the Bluetooth Connectivity. Bluetooth Compatibility Quickly syncs and automatically pairs to your device within seconds. Built In Microphone Allows you to talk through the speaker for hands free calling. Ultra Portable Place it on your desk or any indoor or outdoor surface. Perfect for the beach, parties, camping, BBQ's & bonfires. Multifunction Toggle Allows you to control your device's playback controls such as play/pause, skip forward/skip backward.Technical Details Dimensions 1.9inches x 2.3inches, Bluetooth Version: 3.0, Loudspeaker Output 3w, Battery Capacity 520mAh. Features FM/ Call Handsfree/ Bluetooth/ Micro SD Card Support.