Plantronics Discovery 645
9 g, DSP, talk time up to 9 hours, standby time 3 days and 8 hours
Rating: 
Brand
Bluetooth headset
Plantronics Voyager 520
16 g, Multipoint, talk time 8 hours, standby time of 7 days and 12 hours
Rating:
Plantronics Discovery 665
9 g, DSP, talk time 3 hours 30 minutes standby time 3 days and 8 hours
Rating:
Plantronics Discovery 650
9 g, Multipoint, talk time 5 hours, standby time of 7 days and 2 hours
Rating:
Plantronics Discovery 640X
9 g, Multipoint, talk time of 15 hours, standby time 2 days and 22 hours
Rating:
