The Brady BMP21-PLUS Portable Label Printer is a direct replacement for the BMP21 printer and offers many new benefits and features. This more rugged and highly visible printer has BMP21's performance proven mechanics but with more powerful protective bumpers, internal shock resistance, applications, and materials. This portable printer still allows the use of the same cartridges as the BMP21. Unlike the original BMP21 the new BMP21 Plus can run on either AA batteries or a Li-ION battery. Along with these features more symbols are now available along with a flag and circuit breaker mode, time/date stamp, and zero type selection.