1, Charging Method:Lithium electric induction 2, 16 colors for one 3, IP65 waterproof 4,Certification: ... as per their requirement.advantages:1,Charging Method:Lithium electric induction 2,Recharging Time: 4-5Hours 3,Working Time: 6-12Hours ... Suitable for indoor or outdoor use:1, PE shell and LED lighting, durable and more choice of color2, UV resistant great for indoor ...