Developed by a previously unknown company named RF3, the iFit series of Earhook-style earphones are billed as healthy cellular phone earphones, designed with six-way adjustable earpieces and a shielding technology to reduce emitted cell phone radiation to low levels. One of the versions, the RF3-212s ($40), is a single earphone with an integrated microphone, the pieces connected by an odd bit of surgical-style wireless blue tubing, while the other…
