W440, W740, W745, WH500 Battery

Description

– Savi Spare Battery with on/off switch- Can be switched in mid-call without getting disconnected as long as you reattach the new battery within 5 minutes- Provides unlimited talk time and an excellent reason to have a spare battery on hand- Seven hours of talk time- Fifty hours of standby time- Up to 75 days of storage time- Quick charge- Full charge reached after 3 hours- Mid-call switching- Multiple charging options- Compatible headsets include Savi W440, W445, W740, W745