Bluetooth Speaker Karnotech REMAX Portable Mini Wireless Outdoor Sports Audio Player Powerful Sound with Climbing Hook for iPhone iPad iPod Samsung Laptop RB-X1 Green Compatible with all Bluetooth device. Aluminum handle & carabiner, pressure button, handy and exquisite. TPU cover, anti-shock, protect from wet environment and dropping. Light and compact design, HD voice, enjoy music anytime & anywhere. An ultra-high density battery enables 6 hours of non-stop playtime (Or vary due to environment).