This LED light bulb， with built-in ON/OFF switch， is much easier to operate. It comes with a USB cord， so you can charge the light bulb by computer， laptop or charger. Fully charged， it’ll keep up to 5-hour working performance. This light bulb， due to its small size and powerful lighting performance， is widely applied for stall， camping， riding or other outdoor activities. Would you like to have a try of 12W White Light High Power Rechargeable Emergency Lamp Stall Camping LED Light with ON/OFF Switch?                                    Features             Portable， used for outdoor camping & party， outdoor sports， riding the bicycle & walking etc.<br> It can be used on the train for reading or bedroom for reading<br> High power SMD 5730 imported LED beads， fully charged， it can use for 4-5 hours<br> Convenient and energy-saving<br> With ON/OFF switch on the bulb for easy operation  <br>                                                            Specifications             Material     Plastic    <br> Dimensions     (4.33 x 2.76 x 2.36)" / (11 x 7 x 6)cm (L x W x H)    <br> Weight     7.76oz / 220g    <br> Color     White    <br> Power     12W    <br> Light Color     White    <br> LED Beads Type     SMD 5730     <br> Using Time     4-5 hours     <br>                                                             Package Includes            1 x LED Light Bulb<br>1 x USB Cable<br>