Compatible with: Studio 2.0 (Model B0500/B0501) Studio 3.0 ( Model A1914) Wireless Bluetooth Over Ear Headphone Attention:the original logo was cover by our brand Knomix,you need to remove the label or the protective film then you could find the original logo Product Dimensions: 9.05 X 1.06 inches ( L x W: 23 X 2.7 cm) (Please read the replacement headband dimension before purchasing, or you may order wrong repair headband for headphones) Package Contents: 1X Replacement Headband for Studio 3.0 Wireless 1X Screwdriver 4X Screws If you encounter any quality problems, we will guarantee 90 days warranty time. Please rest assured to purchase The color and size exactly match the original studio 3 parts, you can not tell the difference when they are side by side, and after they all back together, you honestly can't tell the arch band is replaced. Knomix Studio 3.0 Wireless Headband Replacement Parts Accessories Studio 3 Headband Repair Kit Compatible with Studio 2.0 / Studio 3.0 Wireless Top Headband