PYRUS Outdoor Bluetooth Speaker 3600mAh Portable Power Bank Wireless Speakers, Bluetooth 4.0 with NFC, 2x3W Stereo Bass Sound Built-in Microphone - Red Waterproof,Dustproof, Shockproof,Anti-scratch,high temperature Resistant bluetooth phone speaker portable outdoor bluetooth speakers built in microphone allows you to answer calls while listening to music Stylish and exquisite appearance, portable, you can enjoy music anytime and anywhere New 2 in 1 Function - Powerful 3600mAh built-in polymer lithium battery provides up to 10 hours of playback time, a standard USB jack can be used as a power bank, that you can enjoy your music the same time power your electronics Bluetooth 4.0 and CSR chipset connects faster, more stable, compatible with all your Bluetooth-equipped devices(Smartphones, Tablets, PCs, MP3 Players, etc.)