Portable Multifuctional Outdoor Bluetooth wireless Speaker Sport NFC Waterproof Shockproof Dustproof Bluetooth Speakers Deep Bass Subwoofer Sound 4000mAh Battery & TF Card Slot with Microphone Bluetooth V4.0 & Imported CSR Bluetooth Chipset, More Stable Audio Transmissioin, Faster Bluetooth Pairing Speed, Lower Power Consumption, Superior Compatibility; Adopt The World's Leading " Passive Resonance Membrane  Technolog, Double Magnetic 16 Core Alloy Speaker, Super Bass & Stereo Sound Quality. Specially Designed For Outdoor Sports, Three In One Multi-Functional Wireless Bluetooth Speaker: LED Flashlight, 4000mAh Power Bank, Bluetooth Speake Built-in 4000mAh Rechargeable Lithium Battery, Can Be Used As Power Bank To Charge Your Mobile Devices, Also Providing 36 Hours Long Lasting Lighting . Music Play Mode: Bluetooth Mode, TF Card Play Mode, AUX Line-out Play Mode, FM Radio