Listening time less than 20 hours. No scratches or damage. Accessories, including the original ear tips, are unused. Slight box damage typical of international shipping. In-ear monitor earphones Nightingale Pro Brand: SIVGA Wearing style: Both ears, integrated left and right Headphone type: Canal type, ear hook, clip type Color: Brown系 (Brown-toned) Wireless/Wired connection: Wired connection Headphone features: Detachable cable Low-frequency response (Hz): 20.0 Hz High-frequency response (kHz): 40.0 kHz Impedance (Ω): 16.0 Ω Sensitivity (dB): 107.0 dB Driver type: Planar magnetic Plug type: 5-pin terminal Driver size (mm): 14.5 mm Cable length (m): 1.25 m