The ZIPLEVEL® PRO-2000B altimeter is essentially a PRO-2000 with a shorter Cord and no accessories. It is supplied with a User Guide. The lower-priced PRO-2000B comes without a protective rubber Boot, Unipod or Stakes and has 75′ (23m) of Cord that covers a 150′ (46m) circle. Each of the ZIPLEVEL accessories can be purchased individually. Purchase of Protective Boot is highly recommended both for additional protection against impact and to keep the Measurement Module stable on slippery surfaces. Total product weight 5kg.