Remington Rechargeable Quick Cut Cordless Hair Clippers @My Memory
Probably the best cordless hair clippers you can buy ( I personally prefer the Philips version ) . Virtually foolproof for DIY haircuts , you just need a bit of patience to make sure you don't miss anywhere . Just keep going over your hair or get a (very good and trusted friend or partner to do it for you ) .
Do not even contemplate one of the many Chinese "tat" versions on Amazon market place - they are rubbish , blunt and painful ( I speak from experience !)
This will last you years , a good investment .