This UV C steriliser vacuum stainless steel bottle uses intelligent UV C LED technology to clean the inner surfaces of the bottle by eliminating odour causing bacteria and viruses in about 5 minutes. Beautifully designed. Keep your water cold for up to 15 hours and hot for up to 5 hours with double wall insulated stainless steel construction. Comes with USB rechargeable 180 mAh Li polymer battery, which enables you to sterilise your bottle up to 14 times on a full charge. Capacity 500ml. BPA free.