Synergy Digital Wireless Headset Battery, Compatible with Plantronics W440 Wireless Headset, (Li-Pol, 3.7V, 140 mAh) Ultra Hi-Capacity, Compatible with Plantronics 82742-01 Battery

The Synergy Digital Battery is a game-changer for anyone who needs a reliable and long-lasting battery for their wireless headset.

With its high-energy density and advanced Lithium Polymer technology, this battery can keep your headset powered all day long.

Plus, it's easy to charge in the cradle when you need to top off.

Don't settle for anything less - choose the Synergy Digital Battery for your wireless headset and experience the difference for yourself.