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).
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).