Main Features of Active Noise Cancelling Bluetooth Headphone V4.2
The noise canceling Bluetooth headphone V4.2 possesses the following characteristics:
* Bluetooth V4.0 stereo headset
* With music streaming & hands free
* Last number redial
* Supports 3.5 Audio input
* IOS system battery display
* Active noise cancellation
Parameters of Active Noise Cancelling Bluetooth Headphone V4.2
Bluetooth specification
BT4.0+EDR
Bluetooth chips
CSR8635
Bluetooth profiles
A2DP/AVRCP/HSP/HFP
S/N ratio
≥95dB/mW
Frequency respond range
20Hz-20KHz
Noise reduction
15－20dB
Battery
400mAH 3.7V lithium-ion polymer battery
Music play time
12 hours (75% of the volume)
Talk time
12 hours
Charging time
About 3 hours
Product size
180mm*165mm*70mm
1. Active noise cancellation (ANC) (1) The more ambient noise, the better the noise cancellation
We can’t change the environment noise, but we can choose to accept less noise. By using the built-in microphone of the earphone to monitor background noise and then generate sound waves with inverted phases, the active noise cancellation technique neutralizes noise. When the noise is neutralized, a better sound quality is enjoyed, lending itself to better studying or work focus.
(2) The difference between active noise cancellation and passive noise cancellation
Passive noise cancellation cannot eliminate noise with middle and high frequency in places such as cars and underground stations.
By using active noise cancellation, the low frequency noise can be significantly reduced (such as in a car or underground station). Environments with mid to high frequency noises can also reduce the ambient noise, thus creating a comfortable and quiet music listening environment.
2. Speaker introduction
Passive noise cancellation cannot eliminate noise with middle and high frequency in places such as cars and underground stations.
By using active noise cancellation, the low frequency noise can be significantly reduced (such as in a car or underground station). Environments with mid to high frequency noises can also reduce the ambient noise, thus creating a comfortable and quiet music listening environment.
A: Titanium plated compound film
B: PET compound film
C: Voice coil
D: NdFeB magnets
Sound curve
3. Battery life
When the active noise cancellation and Bluetooth are both on, the noise canceling Bluetooth headphones still have a battery life of 12 hours to meet long term requirements for music playing and talking.
4. Comfortable ear muffs
Bio-protein film cover
The holding force of the headset can be adjusted according to facial features to reduce constriction. It uses a bio-protein film cover with high quality memory foam inside, making it comfortable to wear, ensuring users can listen to music for long periods of time with no discomfort.
Comfortable and fitting ear cushion
The wrinkled ear cushion is more fitting because it can cover the ear completely, thus cutting out background noise and making it comfortable for long term usage.
