Product material: plastic + middle ring iron wire + magnet
The USB battery is dual-purpose. It can be powered by four AA batteries alone or by USB. USB and batteries cannot be used at the same time (the base will be burned out).
EAAXOrStCYTwBOwyz11sQyhtnaf1c4pT16nTvP0MqeSWyPYK3RmMOf8XemWxjZAOMhdSshZApfnkt8b0dcZBGzWikR0xOujUNIiN0Cfi0eq3IACdsNYmQ2JwEjGheNpRLEuM2UDw4v7jW1mTUAzz7zCbf1G5MIGuVGDwO6mKl47IKdqdGhVexJXuqBdLDKA0wgZDZD
Product material: plastic + middle ring iron wire + magnet
The USB battery is dual-purpose. It can be powered by four AA batteries alone or by USB. USB and batteries cannot be used at the same time (the base will be burned out).