This item includes a Lithium-ion battery. Tend not to blend with solid squander stream. Put in batteries should be disposed of by an experienced recycler or hazardous products handler for every local regulations. trong m?t kho?n th?i gian nh?t ??nh tr??c khi ?i?u ch?nh, t?t nh?t b?n nên dùng ph??ng pháp t? ??ng ho?c xây d?ng hàm ?? ki?m tra v