Product Description
Technical indicators:
Category: Wireless ANC headphones
Wireless Version: V4.1
Modulation method: GFSK, π / 4 DQPSK, 8 DPSK
Support BT protocol:HFP v1.6 HSP V1.2,A2DP V1.6,AVRCP V1.4 DI V1.3
Wireless transmission range:<10 m
Transmission power: support CLASS1 CLASS2 / adjustable CLASS3 maximum 8 DBM
Frequency range: 2.4 GHz to 2.480GHz
Working voltage: 3.7V
Maximum output power: 90MW
Noise level :18-20db
Signal to noise ratio (SNR): ≥ 90db
Power supply: 280mA lithium battery
Rated operating time:≥12h
Noise reduction modes: dual-microphone noise feedback
Speaker diameter: Ф40mm
Speaker Impedance: 32Ω
Speaker frequency response: 20Hz – 20KHz
Speaker sensitivity: 115dB
Noise level: ≤-78dBA
the dynamic range: ≥ 78 dBA
Distortion THD: ≤ 0.1%
Stereo crosstalk: ≤ -52 dBA
Wire length: pvc wire, 1.2m
Packing Content
1xBluetooth Noise Cancelling Headphone
1x 3.5mm Audio Cable
1x Mirco USB Charging Cable
1x Airplane Adapter
1x Packing Bag
1x User Manual
Warranty
Our 699d product includes a 45-day money back & 12 month warranty
Product Features
- ACTIVE NOISE CANCELLING – Internal precision noise reduction headphones circuitry effectively eliminates up to 85% of background noise,such as avoids airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear,enjoy your music, movies and videos. NOTE: ANC works best at reducing consistent Low Frequency Background Noise, like engine sounds, metro noises, large crowds etc. The Active Noise Canceling function can work well both in wire and wireless mode.
- Hi-Fi STEREO SOUND: Dual 40mm large-aperture driver units and Bluetooth 4.1 Tech provide more stable transmission speed, lower latency and better audio output.The high quality of headphones ensure a high quality auditory experience featuring rich bass, as well as powerful and balanced sound.
- WIRELESS AND WIRED MODE AS YOU WISH:These ANC headsets can support Wireless and Wired Mode to meet your needs everywhere.Build-in high performance rechargeable safe battery provides up to around 20Hrs playing time (Bluetooth Mode)/ 30Hrs playing time(noise canceling mode), and that also depends on the sound volume when using. You can take the headphones out using wireless mode or stay at home or offices to use the wired mode to enjoy the active noise canceling functions and never power off.
- ERGONOMIC DESIGN: To fit everybody’s head and ears perfectly, the noise cancelling headphones equips adjustable head bands and fits cushioned ear pads by protein skin.Besides, its’ lightweight brings no burden for your head. It’s foldable headband design can save desktop space for you.(Warm Tip:Please take off the headphones every 1-2 hrs to get your ears relax and comfortable.)
- STABLE BATTERY LIFE AND DURABLE HEADPHONES.12 month warranty and quick response & friendly customer service from 699d brand.
