Sony MDRRF970RK 900 MHz Analog RF Wireless Headphone

These headphones are pretty good when they work, both quality and range. But unless you use them daily, you absolutely cannot rely on the rechargeable battery. If you use the headphones at exactly the moment a recharge is complete, it will work fine. But if you have not used them for several days, but left the headphones in the cradle (supposedly to recharge as needed), they will NOT continuously recharge. In fact, they will almost always be dead. Not a very good design. I have many Sony devices with rechargeable batteries that never lose a charge until the battery gets old (my wireless phone and my rechargeable universal remote control). But this Sony item seems to have missed that design session. Avoid these like the plague.Buy Sony MDRRF970RK 900 MHz Analog RF Wireless Headphone!