The AKG K840 KL Wireless Headphones is one of the best in the wireless category. It provides CD-quality audio over the air via a transmitter because of the Kleer technology which delivers 16-bit stereo audio sound over a 2.4GHz radio link (uncompressed). It operates 10 meters max from the transmitter and it has battery life of up to two weeks before you need to recharge it.
Comes with a hard case and the portable transmitter. Note that you need to plug-in the transmitter to your music player to be able to connect to the headphones. This device is the one that actually helps with the sound quality.
SRP is Php27,190. Available in JBL concept stores. My favorite one is the branch in Bonifacio High Street.