BTS2.0U Plus

.USB Power type Sound-bar design
.Special Tuned Full-Range 30mm Drive Unit
.Stereo Expander (Virtual 3D)
.Bass Booster (Optional)

Portable Speaker(BPS2.0)

Extreme Batt. Power Design
.Class-D Amp.
.0.79mA Quiescent Current
.>60% lower power consumption than other
  D-Class Amp.
.Wild-Range Operation Voltage: 2.5V ~ 5.5V
Dual Power Input Design
.AAA x 4 Battery Cabin
.5V DC input for AC Adapter or USB input

2.1 Bar Type Speaker (BTS2.1U Plus)

.12W Flat & Base type Sound-bar design
.Integrated Dual Sub-woofer Unit
.Powerful Audio Solution- 3D surround sound.
.2W+1W Speaker Unit (each channel) design.
.Front panel audio out jack

RF 2600 Wireless Headset

.Simple plug & play--USB wireless transmitter
  without software or pairing installation.
.Move freely up to (20 meters) away from your
  computer.
.Working time: 8 hrs.
.Clear sound quality for PC calling, music, and
  games.
.2 AAA batteries power supply.
.Rotate-to-mute: The microphone utomatically
  mutes when you rotate it up and out of the
  way.