Ultimate Ears Wonderboom. Passive radiator size (W x D): 1.81 x 2.57" (46.1 x 65.2 mm), Driver diameter: 1.57" (4 cm). Frequency range: 80 - 20000 Hz, Sensitivity: 86 dB. Connectivity technology: Wireless, Bluetooth profiles: A2DP, Bluetooth range: 1299.2" (33 m). Product type: Stereo portable speaker, Product color: Black, Product design: Cylinder. Recommended usage: Universal, Mobile operating systems supported: iOS, Android

• - Hear your music like never before with Ultimate Ears WONDERBOOM™. It’s a super-portable Bluetooth speaker with sound that is surprisingly clear, crisp and full of big, beautiful bass.
• - Be there all day, all night. Ultimate Ears WONDERBOOM™ gives you 10 hours of musical ecstasy. From picnics in the park to binge-watching your favourite shows, you'll enjoy 10 hours of non-stop entertainment with brilliant, immersive sound.
• - Ultimate Ears WONDERBOOM™ is the greatest thing to happen to baths since bubbles and duckies. It is completely waterproof, floats and – yes – it will even serenade you. And it is also great for showers, pools, beaches, waterfalls, muddy fields and rainy days. If it gets dirty, just rinse it off.
• - If you think one Ultimate Ears WONDERBOOM™ speaker sounds great, you'll love how they sound together. Press a button on each to pair them up. Then turn things up, get a little crazy and dance like nobody's looking. Wherever you are.