The Calltel T400 Mono-Ear Noise-Cancelling Headset is a great affordable headset that is comfortable as it is affordable. It features a noise-cancelling microphone that automatically adjusts the volume for ease of use and convenience. It features an ergonomic comfortable design with an adjustable headband that allows you to wear it for a long time, making it perfect for all-day working hours. For extra safety, it features acoustic shock protection which limits acoustics. The earpiece itself features a soft leatherette ear pad which can be replaced if needed.

FEATURES:

• Noise-cancelling microphone
• The cable is durable, can bear 20KG pull, rotate more than 60000 times, 345°
• Acoustic Shock Protection: Acoustic limiting for protection
• Adjustable headband
• Replaceable soft leatherette ear pad

SPECIFICATIONS:

• Microphone: Permanently polarized condenser microphone
• Impedance: 1.0KΩ
• Work Frequency :120 ~ 10k Hz
• Sensitivity: -40dB ± 2dB (f = 1KHz, 0dB) (RL = 2.2K Vs = 3.0V)
• Current consumption@ 2.2V (μA): < 300
• Current consumption: 800μA
  Receiver:
• Impedance: 300Ω ± 10Ω
• Output sound pressure: 105dB ± 5dB
• Work Frequency: 30~ 17k Hz
• Max Input Power: 20mw
• Interface: Single 3.5mm

WHAT’S IN THE BOX:

• Calltel T400 Mono-Ear Noise-Cancelling Headset Single 3.5mm – Black x1