Development and innovation (Delta-X): Indicates that it is a new generation headset or that it offers advanced features over the basic models, which may relate to sound quality or design.

Sound quality: Expected to provide detailed and balanced sound, with special attention to powerful and clear bass technology.

Advanced Technical Features: May include:

Multi-directional speakers: For better sound distribution throughout the room.

Hi-Res Audio Support.

TWS technology: To connect two Delta-X headphones together for dual stereo sound.