Calculating time recorder automatically adds up employee hours between clockings giving a daily and weekly running total. Calculates weekly, bi-monthly or monthly pay periods up to 62 clockings per employer per pay period. New upgraded 100 employee capacity. Rounds clockings to nearest 1, 5, 10 or 15 minutes. Automatic summer & winter time change. Resets after power cut. Wall or table mounting. 12 months guarantee.