Features:
1.Built-in Lion Battery, 1200MAH, Playtime: 2-4 hours, Charge time: 2hours; Built-in high capacity battery, directly to the computer's USB port charging Up to 6 hours of music play (depended on the volume)
2.Built-in high-quality 3w voice coil speakers, bright treble, alto mellow, deep bass, bringing you the perfect music to enjoy;
3.Access to volume, track skip and light effects, make it easy to navigate without having to reach for your device. Built-in microphone, for clear voice call;
4.Bluetooth wireless technology allows for an easy simple connection. Enjoy music from any Bluetooth enabled device such as smartphones, Tablets, for iPhones, for Ipad Notebooks, PC's and More;
5..Waterproof IPX7 Outdoor tough Waterproof, dustproof, Anti-drop.

Specification:
Bluetooth Version: V 4.2
Frequency: 80HZ-20KHZ
Size: L125*W61*H39mm
Power Supply: 5V/1200mAh Li-on Battery
Battery type: 1200mAH Lithium Battery
Music Playing/Talking time: 4-6 hours
Charging Time: 2-4 Hours
Transmission Range: ≤10M

Compatible with:
Any Bluetooth Device As MacBook, MacBook Pro, PCs , Notebook, Desktop, Portables PCs, Smartphones, Smartwatch , for iPhone 6, 5s, 4s, for Samsung Galaxy S3, S4, S5, Note 2, 3, 4, Tablets, Sunglass, Bluetooth Headset, Tablet PC
Recharge very fast with any USB car chargers, power bank, wall charger USB chargers .

Kindly Remind:
If you get trouble from the radio function , please kindly try to these methods:
1. Go outside for try it ;
2. Plug the USB MICRO line plug into the speaker usb micro interface as an external antenna.
The number of FM stations and effects:depending on the environment and the local network signals., if you are so essentially to the FM Radio function , pls kindly note it , Thank you !