Has three layers.It is not harmful to humans or pets. Environmentally friendly.Just kills mosquitoes, flies, gnats, and all flying insects on contact. Contains an activation button that can be pressed conveniently while holding the racket It can be used indoors and outdoors. Lightweight, convenient, and easy to carry.Output Voltage: 2200-2400V. Charge time: 8-12 hours. Recharge in recycle for 600 times.3 mesh. With illumination. Order now and have them delivered right to your doorstep.