Universal fit type earphones Typ821 MDO-T821-TI Brand: MADOO Purchased last January, used for about 1 hour a week, so I think it's less than 200 hours. Wearing style: Both ears, integrated left and right Earphone/Headphone type: Canal type Structure: Sealed Color: Black系 (Black-based) Wireless/Wired connection: Wired connection Earphone/Headphone features: Detachable cable Low-frequency range (Hz): 20.0 Hz High-frequency range (kHz): 40.0 kHz Plug shape: Mini plug, 5-pole terminal Cord length (m): 1.2 m Weight (g): 45.0 g Thank you for viewing.