The Q1 Headset is great for people on or in the water. Suitable for sports such as Kayaking, Canoeing, Stand up paddle boarding (SUP), Sailing, running, swimming, cycling plus many more. 
 
The Q1 Bone Conduction Swimming Earphones is an IPX8 level certification headset so you can go 3 meters underwater. 

Built-in memory 8G, can store up to 2000 songs, and listen to songs underwater without connecting a mobile phone. 
 
Note: There is no BT transmission signal when underwater
 
It can switch between BT mode and MP3 mode at will. 
In BT mode, you can listen to Internet songs, and answer phone calls and voice chat. 
In MP3 mode, you can listen to songs without connecting to a mobile phone.
Suitable for : Android, 5.0, IOS, 8.0 and above mobile phones, PSP, Laptops and other terminal devices with bluetooth function.