The most annoying problem with a lot of grooming devices is they require batteries or arent cordless. INSTRUCTIONS - Clear easy to use instructions are included in the luxury case. No batteries required!
Very good product at a very reasonable price
They do not need batteries and they trim much better than any others I've ever had this is why I have given them 5 stars as 50 plus and suffer from the nose hair so if you are thinking I'm not shaw click bye now