Ruth's sister MD04 International Power Cord

Bone Conduction Sports Earphone

The MD04 uses bone conduction technology to transmit audio through the cheekbones, leaving the ear canals open for ambient awareness. A memory titanium alloy rear suspension allows 360-degree bending without damage. The neckband style stays secure during running, cycling or gym sessions. Six bass diaphragms and CVC noise reduction aim to deliver clear voice and low-frequency impact.

Suits outdoor athletes and commuters

This design suits users who must hear traffic, announcements or teammates while listening to music or taking calls. The open-ear approach prevents the isolation that traditional sealed cups create. Buyers who want maximum bass pressure, complete noise isolation or audiophile-grade fidelity should look at something else. The IPX5 rating handles sweat and rain but not submersion.

IPX5 water resistance

The earphone carries an IPX5 rating, meaning it resists water jets from any direction during heavy sweat or rain. This single specification decides whether the unit survives your typical workout conditions. If your activity involves swimming, showering or immersion, this is not the right part. No other ingress protection level is claimed.