BAT50 11/8/2017 Category: Products, DX Series Digital Wireless Systems, Chargers & Batteries, Wireless, DX100 Digital Wireless Systems, Chargers & Batteries, DX121 Digital Wireless Systems, Chargers & Batteries, DX210 Digital Wireless Systems, Chargers & Batteries, DX340ES Digital Wireless Systems, Chargers & Batteries, DX410 Digital Wireless Systems, Chargers & Batteries Up to 20 hours of beltpack operation with each charge For BP410 beltpacks and WH410, WH301 and WH220 all-in-one headsets Charge time is 2.5 hours