ZEALOT S1 Portable Bluetooth Speakers 24 Hours Play Time Wireless Bike Speaker with Micro SD Card Slot AUX Input Music Player Flashlight (Blue) Long Play Time, build in 4000 mAh Rechargeable lithium battery, can keep play music up to 24 hours once fully charged. Silicone protective sleeve ensure waterproof and shockproof, You can freely use it in a variety of harsh environments Powerful Power Bank, Do not worry about battery died when outdoor travel, ZEALOT S1 charge your electronic devices. Dual Mode Music Play, you can play music via bluetooth, MicroSD card, Listen to news via FM radio, It makes your life no longer silent Flashlight function, can be used as normal flashlight and SOS emergency signal.