Customize your audio to your style with the IF Transparent Wireless In-Ear Earphones. Looking more like a piece of jewelry, these earphones feature handmade technology to deliver some serious sound. The IF Earphones come in two versions: MD31 and MD51. The MD31 features three armature drivers while the MD51 features five. The 3D printed drivers offer more convulse bass thanks to the low-pass filter. Each driver controls a different frequency of the sound. This means they have a great balance on the low, mid, and high frequency and the combination provides better performance of the sound details. Likewise, the wireless earphones come with a six-stranded 3.5mm cable should you want to switch to wired listening. Coming with six ear tips for total comfort, the MD51 have sound isolation to block up to 70dB. Along with professional sound quality, you can also customize the earphones with up to eight characters on the right side. Finally, with an IPX 47 waterproof rating, they can stand up to anything you throw their way.