This is a Logitech G Pro X. It has blue switches and is tenkeyless. I bought it a few years ago and used it. I don't think it had any chattering issues. The paint on the WASD keys has been wearing off since I bought it. I washed the keycaps and wiped the body with alcohol. I haven't checked every detail, but the keys I usually use were working. I'm listing it as a junk item.