An Accelerometer is an instrument used to measure acceleration and may count vehicle movement as steps, step counting function is intended for continuous walking exercise sessions, Intermittent steps may not be recorded accurately. Tracks up to 99,999 steps, distance, calories burned and activity time when worn in any position . Energy saving auto shut-off. Stores up to 7-days of data, Easy to read clock and low battery indicator, Lanyard included, Imperial and metric measuring settings. Complies with Prop 65. 2.625" L x 0.5" W x 1.25" H. Price includes a 1 Colour Imprint. Imprint area is 0.75" W x 0.375" H on Front. Call for multi-colour or multi-location imprints or for rush delivery availability.