1. 5 Gears Tuning: The knob of 50W volume control has 5 adjustable positions, which makes the volume adjustment more flexible; non slip design; simple operation. 2. Lossless Sound: 50 volume control has a stable output to that the sound quality is not reverberated, providing excellent lossless sound quality. 3. Flame Retardant PC: 50W volume controller is made of flame retardant PC material, fire retardant, safe and reliable, and long lasting. 4. Easy Wiring: 50W volume controller adopts simple wiring design, convenient and quick, so that everyone can easily get started. 5. Large Panel Design: 50 volume control adopts frameless large panel design, fashionable and atmospheric, better amplitude into the home environment. Item Type:50W Volume Control Size:. 86x86mm/3.39x3.39in Tuning:Five Gears Tuning Power:50W How to Use:DIY installation can be used. Color:Black Material:PC Package Contents: 1 * Volume Control switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.