HEADPHONES :
* RF Wireless headphone system using FM transmission system
* Up to 150-foot transmission range with manual frequency tuning/reception
* Lightweight closed-type headphones with 30mm drive units for deep bass; accurate sound; volume control on headphones
* Automatic power on/off with transmitter that turns on when it senses an input signal
* Convenient rotary-style volume control
* Self-adjusting headband for precise and comfortable fit
* Highly-rigid, low-mass PET diaphragms provide minimum distortion and high-frequency response
* Ferrite magnets pack high energy in a small size
* Easy rechargeable battery system automatically charges the headphones batteries when placed on the transmitter (for rechargeable batteries only)
* Up to 20 hours of battery life
* Dimensions: 4.9" H x 5.25" W x 5.35" D
THe head phones have little chargable batteries in it, with a full charge they last a really long time, i barely ever put it on the charger, and doesnt take long at all to fully charge
HARDDRIVE
* Slim, compact & stylish (designed by Pininfarina)
* Ruggedized for travel
* Hi-Speed USB 2.0
* 5400 RPM with 8Mb buffer (cache)
* One-Click™ backup software (Windows only)
* No external power required
* Plug n' Play and Hot-Swappable
* Free and unlimited technical support
* 3-Year warranty