Acroprint BP125-6NR4 Heavy Duty Manual Battery Operated Time Recorder for Month, Date, Hour (1-12) and Minutes Time Clock Manual heavy duty time recorder with numerous typewheel options Operates in any environment, developed for harsh and heavy use Lifetime warranty on print wheel Automatic ribbon feed and reverse Powered by four (4) standard alkaline "D" cells (batteries not included). Ideal for areas with no AC power or for mobile operation.