ZEALOT is a professional electronic Bluetooth speakers and Bluetooth headset company. We have professional R & D team for the Innovative Designs we Create. S1 is a Brand new product. It is a Bluetooth speaker as the outdoor riding mate. You can use it to listen music when you are bicycling or have a picnic, camping. It also be used indoor. S1 can be as a mobile power bank. It’s capacity can charge twice for iPhone. S1 has emergency flashlight function. It can be used as a temporary spare flashlight when you suddenly enter a dark environment. S1 support TF card. S1 has IP55 waterproof and dustproof skid Feature.