Check the listing for details. New - Grandstream DP735 Ruggedized High-Tier DECT Handset. Color: Gray, Condition: New. Listed at 109.99 USD. MODEL: DP735. Use with Grandstream’s UCM series of IP PBXs for Zero Config provisioning. Ruggedized design, IP67 Rated-Water-proof, dust-proof, cleaning chemical resistant, antimicrobial casing, drop safe from 2.5m.