Like new. Used only once for a short period. *3.5mmΦ to 6.3mmΦ conversion adapter not included. 【High-Quality Driver】 Equipped with a 50mm driver, achieving a wide frequency range (10Hz-30kHz). Provides optimal sound quality for music production and listening. 【Comfortable Fit】 The self-adjusting headband and soft ear pads ensure comfort even during extended use. 【Convenient to Carry】 The included carrying pouch makes it easy to carry around, even when you're on the go. - Brand: Superlux - Model: HD681F - Accessories: Carrying pouch - Driver size: 50mm - Frequency range: 10Hz-30kHz - Maximum power: 300mW - Impedance: 32Ω - Sensitivity: 98dB SPL/mW - Weight: 276g Thank you for viewing.