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The watertight Dolphin MP3 player has sufficient amount of storage which is 2GB. It also comes with some helpful extras similar to a clip with which can be use to attach the player to shorts or shirt when using it on dry land. It's water-resistant MP3 player and its classified as IPX7 standard. This means that it can be immersion to 3 feet under water for 30 up to minutes. A helpful feature of the Dolphin MP3 is the 5 minute recharging ability via the USB port, and thus giving the consumer up to 120 minutes of playback time. Nonetheless, the player draws a number of power when its being recharged and so older PCs may not have the appropriate USB ports for this purpose. What is required is a 2.0 USB port or a 3.0 USB connection.

The dolphin mp3 that is completely recharged can work as much as 18 hours and up to twenty hours of playback time. The inner battery product of lithium ion rechargeable battery is responsible for the lengthy playback time. This MP3 player also comes with a water-proof earbuds which allow customers to let them listen to their music while in the water. Moreover, the 2.5 millimeters headphone plug on the player has a splitter which accepts 3.5 millimeter headphones, making it appropriate with any standard size earphones jack.

One additional perks of Dolphin MP3 is the soft silicon case that comes with the player and this is use to carry the Mp3 player especially when its not in use. This will protect it from unintended harm, though Nu claims that it is unbreakable! This waterproof audio player consists of three buttons positioned on the bottom of the unit. The buttons are tangible and easy to depress. The one downside about it is that it does not have any shuffle feature.

Some customers in the pass has griped about the the headphones not working after a while, which could be attributed from chlorine build up. But this problem can easily be fix by washing the player after it gets used up in the swimming pool. It is also recommended to clean the headphone jack with a Q-tip dipped in alcohol. Overall, the earbuds is very straightforward to make use of and it supplies good songs even when its being used in the water

The Dolphin MP3 is a very light-weight player so is comfortable to put on, and most customers enjoy using it because its easy use, its comfortable, and it allows them to listen to their favorite music even while swimming in the pool.