1,Lithium electric induction charging 2,color changing, 16 colors 3,IP65 waterproof 4,Certification: CE \ RoHS \ FCC \ ... electric induction filling for 20/30cm Cube2,Recharging Time: 4-5Hours 3,Working Time: 6-12Hours 4,Voltage/Power: 7.5V/1 ... indoor or outdoor events3, Energy saving, working time up to 6~12 hoursNovel design, multiple color, remote control, energy saving, environment friendly ...