The Edifier H640P headphone user manual provides safety instructions, features, specifications and warranty information.
This manual explains safe usage of the Edifier H640P Hi‑Fi stereo headphones, including warnings about pacemakers, volume levels, and using the headphones while driving or cycling. It also details the service terms and how to obtain support.
The document lists the product’s key features, technical specifications such as driver size, impedance and cable length, and provides manufacturer and warranty details for both Beijing and Dongguan facilities. This manual is written in Chinese.
| Driver unit | 30 mm |
|---|---|
| Impedance | 32 Ω |
| Sound Pressure Level (SPL) | 89 dB |
| Frequency response | 20 Hz – 20 kHz |
| Connector | 3.5 mm stereo |
Do not wear or store the headphones within 10 cm of a pacemaker, keep the volume low, and never use them while driving or cycling.
The nominal impedance is 32 Ω.
No, for traffic safety you must not use the headphones while driving or cycling.