Bluetooth Speakers, SmartSpeed Wireless Speakers Portable IPX5 Waterproof Speakers Shower player Stereo Bass with Carabiner for Outdoor Travel Cycling support 3.5 mm Audio cable, TF card (Green) [Waterproof & Shockproof] Portable Bluetooth Speaker with aluminum alloy carabiner, perfect for outdoor activity like climbing hiking and Bicycle Cycling. [Fully compatible] Support Bluetooth connection & Aux cable & TF card. Applicable to almost all device like MP3/MP4/cellphones/computers/tablets. [Built-in Mic] Hand free cell phone conversation. Subwoofer deep and delicate treble in loud and clear, add spice while enjoying music, bring you better stereo experience. [3.0 Bluetooth Technology] Outstanding connection range of up to 33 feet, power saving, low consumption, faster and more stably transfer. [NFC function] Support NFC functions, one touch to start your Bluetooth connection and music time after setting once.