brand Features: Replace old, broken, cracked, damaged, or faulty headphone speaker unit parts. High-quality construction with stable performance. Compatible with left or right side of headphones. Designed for QC15, QC25, QC35, QC3, AE2, OE, and 40mm driver headphones. Speaker unit only; other accessories shown in the image are not included. Specification: Material: Plastic Type: Accessory Impedance: 32 ohms Sensitivity: 20 mW Color: As shown in pictures Size: Standard size Quantity: 1 piece Note: 1. No retail packaging. 2. Please allow 0–1 cm measurement variation due to manual measurement. Ensure you are comfortable with this before purchasing. 3. Due to monitor differences, the actual color may vary slightly from the image. Package includes: 1 x Speaker Unit