Specifications BrandBIKIGHTShell MaterialPlasticColorBlackSize105 x 43 x 43mmInterface1 x USB 1 x Micro USB 1 x DC5 5mmInput Micro USB 5V DC5 5mm 4 2VOutput DC5 5mm 3 7 4 2V USB 5V 2ACharging Battery1 4 PCS 18650 batteries Not include Lighting Mode 3 gears Hard Light Low light FlashingSwitch TypePress SwitchLight Distance50 100m Features Equipped with multifunctional input and output interface Adjustable LED lighting modes with hard light low light and flashing Fast detachable cover which can opened by a approx 1 65mm thickness coin Convenient to replace batteries with the opening battery compartment Used to charge 1 4pcs 18650 rechargeable batteries with the micro USB interface Suitable for charging smart phones tablet PC floodlights etc Can be tied on bike by the portable bag with the bottom opening design Note 1 Please charge the batteries timely as the indicator light is flashing and the indicator keeps on in charging status 2 The computer or other USB devices can only charge 1PCS 18650 battery 3 Please use the USB plug which output above 1A to charge more than 2PCS18650 batteries to prevent the large internal resistance of battery Package Included 1x Battery Box1x Bag