What can the seven heads be used for?

The set covers flat surfaces, grout lines, corners and curved tub or sink areas. Match the head to the surface: stiff bristles for tile and grout, softer ones for tubs and fixtures.

Is it safe to use in a wet shower or tub?

The motor is described as waterproof, so it is meant for wet cleaning in bathrooms and showers. Dry the handle and charging area afterward.

Does the handle reach high tiles and ceilings?

Yes. The telescopic handle extends so you can scrub floors and overhead surfaces without a ladder or bending.

How long does the battery last on a charge?

Battery runtime and charge time are not stated. Expect to recharge between larger deep-clean sessions.

Is it worth it over a manual brush?

It saves the elbow work on scum, grease and grout, and the long handle helps with floors and walls. A manual brush is simpler and has nothing to charge.