| http://www.w3.org/ns/prov#value | - Lithium-Ion 3.5v handle 120 minutes of on-time between charges Includes low-battery indicator Resin handle Soft-grip rheostat intensity control AC charging module Welch Allyn will repair or replace, free of charge, any parts of its own manufacture proven to be defective through causes other than misuse, neglect, damage in shipment, or normal wear.
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