Stereo earphones for smartphones made by ELECOM. The semi-open structure provides natural sound quality without stuffiness, and is comfortable even for long hours of use with less pressure on the ears. With a large 13.6mm diameter driver, it reproduces a balanced sound from low to high frequencies. Includes a silicone cover that fits the ear, and can be removed. With a microphone, it also supports hands-free calls. Unused and unopened. ・Model number: EHP-F10IMBBK ・Color: Black ・Type: Semi-open, inner ear type ・Driver diameter: 13.6mm ・Impedance: 32Ω ・Sensitivity: 97dB/mW ・Maximum input: 10mW ・Playback frequency band: 20Hz～20kHz ・Cord length: Approximately 1.2m ・Plug shape: φ3.5mm 4-pole mini plug (L-shaped) ・Accessories: Silicone cover (attached/removable)