equate 6000 series upper arm blood pressure monitor . one-size fits most arm cuff; 8.6 in - 16.5 in. made with soft nylon fabric for a comfortable fit while still providing accurate blood pressure and pulse measurements.; Also detects irregular heartbeats; two users, remembers up to 90 measurements for each user. Displays average of last three measurements. Back lit display large, easy to read, clock display with date and time stamp; gentle inflation, body movement sensor, uses 4 AA batteries. like new, slight superficial scratches on monitor surface.