Sony CH700N Wireless Noise-Canceling Headphones

• Sony
• Model: CH700N

General

• Headphone type: Closed, dynamic
• Driver: 40mm, dome
• Magnet: Neodymium
• Impedance: 22 ohms (when connecting via the headphone cable), 48 ohms at 1 kHz (when connecting via the headphone cable with the unit turned off)
• Frequency response: 7–20,000 Hz
• Frequency response (Bluetooth): 20–20,000 Hz (44.1 kHz sampling)
• Sensitivity: 97 dB/mW (at 1 kHz) (when connecting via the headphone cable with the unit turned on), 98 dB/mW (at 1 kHz) (when connecting via the headphone cable with the unit turned off)
• Volume control
• Cord type: Detachable single-sided type
• Cord length: 3.9 ft (1.2 m)
• Plug: L-shaped stereo mini plug
• Inputs: Micro USB, stereo mini jack
• NFC
• DSEE
• Passive operation

Bluetooth

• Bluetooth 4.1
• Effective range: Approx. 30 ft (10 m)
• Frequency range: 2.4 GHz 
• Profile: A2DP, AVRCP, HFP, HSP
• Supported audio formats: SBC,AAC,aptX, aptX HD
• Supported content protection: SCMS-T

Noise Canceling

• Noise canceling on/off switch
• Automatic AI noise cancelling

Physical

• Battery: Lithium polymer
• Battery charge time: Approx. 7 hrs
• Battery charge method: USB
• Battery life (continuous music playback time): 35 hrs (bt nc)
• Battery life (waiting time): 200 hrs (bt: on / noise canceling: off)
• Weight: 8.4 oz (240 g)

• Sony’s 1-year warranty