Hi, following your lead Arizonakelly, I just bought some wireless headphones and transmitter this evening on ebay for $24.99 (US). Sentry Wireless Headphones and Transmitter *BRAND NEW*, plus $9.99 shipping. I like the way it uses 2 AAA and 1 9V. batteries. I have plenty of rechargeable batteries that I take detecting with me. I will let you know how they work with my MD when it arrives and show a picture of it plugged into my MD. Sure hope it works. I like Kellyco but wanted to see if I could save some money. I wonder if another Metal Detectorist with wireless might accidentally hear my beeps that are being broadcast? Could prove interesting.
Here is the description of them as listed on ebay:
Listen to a late show, crank up the tunes, or immerse yourself in a PC game without disturbing others around you! The Sentry Wireless Headphones deliver total listening freedom, plus great stereo sound. They receive signals from a compact transmitter located up to 100 feet away.
Listen to your favorite audio anywhere around the house, office or on the go, without messy, limited range cords. These Dynamic Wireless Headphones plug into any stereo, dvd, mp3, or personal audio player for listening enjoyment, virtually anywhere. Great for the computer or television. Headphones automatically lock into the transmitter's signal.
Includes an adjustable headband and all of the accessories you need to get high-quality sound without disrupting others.
Key Features & Benefits:
Excellent signal broadcast
Transmits up to 100 ft
LED power indicator
A convenient way to check the power status of your headphones
Listen to any audio device
Great for MP3 / CD / DVD / MD / TV / CAR / MAC / PC
Rotary volume control
Adjust the volume to your preferences
No need to buy extra components
All cables included
Can be used with Hi-Fi stereo
Adapter plug included
In the Box:
Headphones
Wireless transmitter
Hi-Fi Stereo adapter
Transmitter cradle (for use with optional AC adapter)
Stereo mini-plug adapter
RCA-To-Photo plug adapter
Requires 2 AAA and 1 9-volt battery NOT included