Pulse Oximeter - for fingertip with shock guard, neck lanyard, carry case and batteries High definition OLED color screen with 10 brightness settings and 4 viewing modes Digital pulse oximeter provides instant pulse rate and oxygen saturation level readouts, ideal for sport enthusiasts Auto shut-off after 10 seconds of non-use preserves battery life Ideal for sporting or recreational use Includes 2 AAA batteries, clear shock guard to help protect from bumps and drops, handy neck lanyard and sleek black carry case with velcro close