Apollo - Model 3 - Capable Iridium/LED Beacon - Brochure

The Apollo-3 is a short tube variant of the Apollo, the Apollo-3 offers a shorter, lighter package for easier mooring. The Apollo-3 operates in the same manner as the standard long-tube Apollo, however due to the smaller enclosure, requires three Saft LSH20 Size D 3.6V Lithium batteries with a nominal voltage of 10.8V.  Like its larger counterpart, the Apollo-3 has a depth rating of 11,000 meters.