MD300C29 The finger pulse oximeter is the perfect choice for on-the-spot sp02 and pulse rate testing it is user friendly with a simple one button operation the units Lightweight and petite design means it can be easily carried in your pocket the pulse oximeter automatically switches off when a finger is removed from the unit for more than 5 seconds it features an led display that can be seen even in low ambient light levels It also comes with a handy lanyard as standard Features: -Item is assembled.-Distressed: No.Specifications: -5cm H x 3cm W, 0.28 kg.Dimensions: -Overall Height - Top to Bottom: 5.-Overall Width - Side to Side: 3.-Overall Product Weight: 0.28.