Vtin Relaxer Mini Water Resistant Portable Wireless Bluetooth 4.0 FM Radio Shower Speaker with LCD Display, Built in Mic and Suction Cup-Green Vtin Relaxer Mini Water Resistant Portable Wireless Bluetooth 4.0 FM Radio Shower Speaker with LCD Display, Built in Mic and Suction Cup-Grey Super Long Battery Life: With lithium ion rechargeable battery, you can enjoy up to 8 hours of uninterrupted playtime or 1500 hours standby time with a fully charge. Alarm Clock & LCD Display. With a backlit LCD display whose brightness can be adjusted to suit different environment, it can be used as a clock to show time. Alarm clock function makes it more versatile. Set a special time to give your a friend hint,never worrying about missing important date. Note: Under FM mode, the time setting function is unavailable. Strong Suction Cup. This portable speaker has a suction cup on the back to stick it firmly to shower walls, glass, bathtub side, or any other smooth flat surface as you like.The suction cup is quite strong and is a great idea for the windows and car windows. Super Long Battery Life: With lithium ion rechargeable battery, you can enjoy up to 8 hours of uninterrupted playtime or 1500 hours standby time with a fully charge.