Simpiz Bluetooth 4.0 Portable Wireless Speaker NFC Water Resistant with YAMAHA DSP Built in Mic for Hands Free Calling, 10W 10m 10hr Playtime Battery for iPhone, iPad, Samsung, MP3, laptop, PC (Green) BEST BOOMBOX SOUND QUALITY: Powerful 10W dual stereo drivers powered by YAMAHA latest amplifier system deliver Hi-Fi crisp music with robust bass, 360 surround audio and noise canceling. BLUETOOTH 4.0 TECHNOLOGY: Fast, easy, strong and steady wireless pairing to all bluetooth-enabled devices such as cell phone, tablet and computer within 33ft for echo-cancellation clear sound. ULTRA PORTABLE N WATERPROOF: This mini usb bar speaker is super light and compact for travel, party, beach and workout.Its splashproof, shockproof and dustproof for outdoor and shower use. HANDS FREE CALLING: Built-in microphone and volume up/down buttons of this small sound bar is perfect for use in the car or indoor meeting. High quality rechargeable battery is good for 10 hours playback. NFC TECHNOLOGY: Tap-N-Pair for instant and easy connection (compatible with mobile n pad have NFC function). Leading industrial design with durable material and popular colors. 18-month warranty.