Just a few words of who we are and what we do: - a factory of breathalysers based in Poland (the highest quality unitson the market).- readings at 0.0 0.2 0.5 & 0.8%o equivalent blood alcohol levels.- our prices are the best on the market as you&＃39;re buying directly form aproducer rather than a wholesaler.- we offer a complete rebranding of our product (you can put your logo,message, change the whole design of the wrapping/box).- best before is 24 months.