HTC BH M500
42x26x16 mm talk time 6 hours standby time 8 days and 8 hours
Rating: 
Brand
Bluetooth headset
HTC BH M300
39x12x18 mm, 10 g, DSP, Multipoint, talk time 5 hours 30 minutes standby time 7 days and 12 hours, 180 mAh (Li-pol)
Rating:
HTC M200
56.5x22x16.8 mm, 15 g, DSP, talk time 8 hours, standby time of 15 days, 180 mAh (Li-pol)
Rating: