If you want to be able to trim without interruption, this electric hedge trimmer is a great choice. The bar of 45cm is fully sufficient for most tasks. It has a power of 450W.
From Amazon
Flymo 9671028-01 Easicut 460 Hedge Trimmer, 450 W, Cutting Blade 45 cm
Downtown
Flymo EasiCut 460 Hedgetrimmer
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