IP67 Waterproof. With well sealed internal structure, the Cuber Bluetooth speaker boasts is IP67 waterproof rating and dustproof design. Ideal for outdoor sports, shower, beach parties, yacht, camping, hiking, fishing etc. 5W Waterproof Driver. Featuring a 5w powerful driver and A2DP tech, it provides you high quality loud sound and strong bass without distortion. Waterproof driver ensures better water-resistance property. Built-in Waterproof Mic. With superior waterproof Mic, it is easy for you to make hands-free calls. The noise-reduction design helps you filter the ambiance noise, offering you a crystal clear speech. Long Battery Life. Adopted 800mAh high-grade polymer lithium battery, it offers you 8 hours playing time at the volume of 70%. The strap-hook design allows you to bring your own music anywhere. 45 days money-back and 12-month worry-free Guarantee!