Product info 

16W Output and 2 Subwoofers, IP67 Waterproof Weatherproof Shockproof, 66ft Bluetooth Range, 15H Playtime, Built-in Mic, USB Charging Port

Anker SoundCore Sport XL

The Tough Outdoor Bluetooth Speaker with Impressive Volume

Powerful Audio Technology
Connect via Bluetooth 4.1 and instantly enjoy crisp, dynamic sound with impressive volume from the 8W stereo speakers and rumbling bass from the dual passive subwoofers up to 66 ft from your device.

Tough and Durable
Shock-resistant, IP67-rated waterproof and dust-tight. Easily withstands extreme conditions and tough treatment. Perfect for partying on your next big adventure.

Long Battery Life
SoundCore Sport XL has an incredible 15-hour playtime from the built-in high-capacity lithium-ion battery, allowing you to enjoy music all day wherever you go (Playtime varies according to volume level and audio content).

Built-In USB Charging
A 5V 1A output keeps your phone or tablet charged when you're outdoors.

> 6 Month Warranty