Ayfee: We lead, others copy Ayfee Stereo S Waterproof Wireless Bluetooth speaker The Ayfee Stereo S is an outstanding waterproof Bluetooth speaker in every way. It features a rugged waterproof design thats IPX6-rated, Whether on the beach, by the poolside, hiking in the rain or enjoying a shower, just take it with you wherever you go. Dont let its size fool you, it plays louder and sounds fuller and more natural than most of its competitors, including many larger and more expensive models. It has two 1.5 inches total 7 watt speaker drivers and a proprietary passive bass radiator, delivers a full-range and bass-driven listening experience. It Can be used wirelessly (via Bluetooth), wired (via the Micro-USB or 3.5mm Aux ports), via NFC or you can insert a Micro-SD card (Maximum support 32GB) and play with built-in MP3 player. If you want high-quality sound in a compact size, truly waterproof Bluetooth speaker, the Ayfee stereo S is your best bet. Specifications Bluetooth: Bluetooth 4.0 Effective Distance: 33ft/10m Rated Power: 7 Watt Bluetooth Profiles: A2DP, HFP, HSP, NFC Wire Port: Micro-USB and 3.5mm AUX line-in Built-in MP3 Player: Support play MP3, WMA, WAV, APE and FLAC format with a Micro SD card (the Micro-SD card does not include in the package) Battery: Built-in 1700mAh Li-ion rechargeable battery, about 8-10 hours of continuous play (varies by volume level and audio content) Dimensions: 4.8 x 1.8 x 2.5 inches (LxWxH) Weight: 10.3 ounces Whats in the Box Ayfee Stereo S Bluetooth Speaker, Micro USB charging cable (19.68 inches), 3.5mm audio cable (39.37 inches), Carabiner hook, Instruction Manual Here at Ayfee, every products includes an 18-month ensures long-lasting enjoyment of your purchase.