Size: 96*56*51MM Operating voltage: DC 5V Battery capacity: 400MAh Running time: 5 hours "Volume at 70%" Charging time: 2h Function: Support Bluetooth playback/hands-free call bare machine Weight: 172g Connectivity TechnologyAuxiliary Special FeatureBuilt In Microphone 1. WIRELESS STEREO DUAL PARING: This model of speaker series can be used as single device or in paris. If you buy a second unit, you can pair them to act as an immersive stereo system, rocking a surprisingly bigger sound. Combine two units for exceptional stereo sound! With clear vocal reproduction and a decent amount of bass for its size, it offers satisfying well-balanced mighty sound especially for a small area, such as across a picnic table or a couple of lounge chairs on a patio. 2. 4 HOURS OF CORDLESS HAPPINESS: Crank up the tunes wherever you like with this Racoon Bluetooth Speaker. A 400mAh battery life of 4-6 hours ensures it'll outlast the party, and if it does run out of juice simply recharge via the included micro-USB cable. In addition, the speakers integrated metal carabiner makes it easy to attach to belts, backpacks, and bags, so you can have complete confidence listening to your tunes at home, office car, outdoors, on the beach, in the bath! 3. BLUETOOTH V5.0 TECHNOLOGY: Connect wireless via Bluetooth V5.0 and control from up to 33 ft away, while stable transmission connection ensures the music will keep going without dropout. It supports any device with Bluetooth for music streaming or audio playback, such as iPhone, iPad, Laptops, MP3 Players, smartphones, tablets or other devices that support Bluetooth & Bluetooth Smart wireless audio profile. 4. It boasts a premium 3-watt driver and a passive subwoofer to deliver rich sound, while the built-in microphone enables hands-free calling with a range of 33 ft at the touch of a button. On the music side of things, there's a TF card/microSD card slot to give you more musical input options.