Description. This bathroom heater is very safe to use. It will automatically turn off if accidentally dropped. This portable bathroom heater is made of flame retardant material and has internal overheat protection. This silent bathroom heater operates at a very low noise level of about 35 decibels, which is quieter than friction and background music in the office. It will not disturb you in your work. Product dimensions: 15cm x 13cm x 12cm. Quantity delivered: 1 piece Multifunctional heater combining multiple functions in one