This product has a Lithium-ion battery. Usually do not mix with reliable squander stream. Invested batteries must be disposed of by a certified recycler or hazardous components handler per community polices.T.Huy XSMB: Gi?i ??c bi?t k?t qu? x? s? Mi?n B?c ???c bao nhiêu v?y m?i ng??i ?i!We’ve cautiously picked the elements of this kit to ensure