Waters 600 controller, classic durable model, suitable for laboratory use.The device has a display screen, normal function, the appearance is as shown in the picture, with obvious traces of use but does not affect the use effect.The quality is average and the use is normal, suitable for friends who need stability.Prices are available, welcome to send a private message to learn more details.Picture 1 monitors have 3 in stock, the price is the same, just take a look at it, the picture is the real thing