# Bluetooth Specification v1.2 Class 2
# Headset, Handsfree, A2DP Profiles and AVRCP Profiles
# 3.5mm audio jack for customized earphone
# Internal Buzzer
# Unique remote control button
# Talk Time*: 6 Hours
# Music Playing Time*: Up to 6 Hours
# Stanby Time*: 150 Hours

Mobilemag review:

Supporting both mono and stereo mode, the controller portion clips onto wherever you’d like (doubling as a tie clip, perhaps, like in the provided photo) and the actual headphones themselves sprout out of there and into your ears. This way, your earbuds aren’t directly connected to your phone, eliminating at least a little bit of the tangle.