1. Connection type: 3.5mm AUX jack. 2. Speaker unit: 10mm. 3. Impedance: 16Ω ± 15%. 4. Frequency response: 20-20000Hz. 5. Sensitivity: 95dB ± 3dB. 6. Wire control: multifunctional button to switch songs, play and pause music, answer and hung up calls. 7. Microphone: controller with built-in microphone. 8. Ergonomic in-ear design. 9. Material: ABS + TPE. 10. Cable length: 1.2m. 11. Weight: 12g