Mixcder HD501 Bedienungsanleitung Seite 7

Plugging the 3.5mm audio cable to the left side of the ear cup,
the HD501 headset can be used as a wired headset under
certain circumstances, such as during air travel, the headset
battery with no power, or the audio device without the Wireless
function and without pairing.
10. Warranty
The HD501 is covered by a 1-year manufacturer warranty. For
more information, visit www.mixcder.com/warranty.
Note: The microphone can't work when using the headset as
a wired headset.
Specifications
Microphone spec
Microphone Unit: Φ6*5mm
Directivity: Omni-directional
S.P.L:-54±3dB S.P.L at 1KHz
Impedance:≤2.2KΩ
Frequency response:100Hz-10,000Hz
Operating voltage:4.5V
Speaker spec
Speaker diameter: Φ40mm
Impedance: 32Ω
S.P.L: 96±3dB S.P.L at 1KHz
Rated power: 20 mW
Aggregate capability: 50 mW
Frequency response: 20Hz-20,000Hz
Wireless spec
Wireless version: 4.0
Wireless distance: 10m
Transmission frequency: 2.40GHz-2.48GHz
Transmission power: Class 2 0.025-2.5Mw
Support profile: HSP/HFP/A2DP/AVRCP
EN-6