This is a rather old cordless (battery-powered) mower, and well-used. I inherited it from my Dad a few years ago, and he seemed to have had it forever! It works well, but there are a few cracks here and there. Blade was replaced last year. There are two batteries and a charger. Batteries are 2.0Ah I think. One keeps its charge better than the other. The batteries are quite old so don't expect them to last too long if you have a large lawn. You can still buy the batteries, in fact newer Bosch mowers still use the same 36v batteries. A new 4.0Ah one is about £140.
Over 18s only.

Bosch cordless mower 43cm with two batteries and charger (Frampton on Severn GL2)