S1 Portable Bluetooth Speaker Wireless Bicycle Sound Box with LED Light Outdoor Waterproof Subwoofer Stereo Surround Main Features:1. handsfree bluetooth speaker2. power bank function3. led flashlight function (3 SOS light modes)4. with micro sd/TF card slot5. bluetooth version: v5.06. battery compacity: 4000mAh7. music play time: 20 hours8. charging time: 3-4 hoursStandard Package :1 x Zealot S1 bluetooth speaker 1 x USB charge cable 1 x English manualBluetooth speakerMultifunctional cycling speakerPremium bluetooth speakerWe also have other speakersColors from natureBig power Bluetooth SpeakerS1 built 4000mah environmentally friendly batteriesabout 24 hours of continuous playbackLED torch lightin g ; good helper at nightS1 bluetooth speaker assembled import LED core; 500m awa ay from the ultra-high beam; 36 hours of continuous light ing; for both outdoor and homeHIFI bluetooth speaker; lossless sound quality enjoymentAudio decode; support APE/FLAC/HIFI musin playback; support mainstream MP 4WMAWAV audio file decoding playback99% Bluetooth device compatible Whether it is a smart pho ne; tablet; or a regular laptopall are compatiblePassive membrane reso nance technology Passive membrane resonance technol ogy uses the principle of automaticlow frequency track- ing compensation to effectively enhance ebassTF card capable of grac e breakpoint memory playBluetooth Speaker built-in intelligence Dec oding technology; directly TF card stored music files and automatically memory TF card las t played songS1 bluetooth speaker can 36-hour persistent playbackDouble Magnetic 16-core alloy speaker shocking SoundTalk hands-free and enjoy wireless freedomBluetooth speaker body covered military level three anti-designIt's a bluetooth speaker and an FM radio.Strong RF interference ability; s o you can stay at home sittingon the world; enric ch your leisure life.Multi-process design; just to create a real bluetooth speakerwireless bluetooth speakerStrong advantages