A rechargeable bug zapper is an electrically charged device used to kill insects and other flying pests. It operates by emitting high voltage electricity that attracts and kills insects when they come into contact with the device. The device is powered by a rechargeable battery, eliminating the need for a power source. WBM Smart bug zapper is very simple to use. Just place the bug zapper on the flat surface and turn it on. It has built-in light which attract mosquito and flying inscets. When mosquitoes and flying insects come close to the bug zapper electric grid, it will zap them.