I was very pleased to have this bought for me at Christmas but if you have arthritic hands it is not suitable. You have to hold down the top to make it work as it does not lock in place. This is not possible if you have pain in the hands and is only suitable for someone with firm hand pressure. Have returned it and waiting for a voucher to allow me to choose something else. The guarantee with second to none, although refund voucher slow to arrive as you cannot get it taken off your new order or an evoucher like you can with most online companies.