Sony MDRZX770/780DC Noise-Cancelling Bluetooth Headphones ( Certified Open Box Product ) Read more...

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Audio Format(s) Supported  SBC, AAC, and aptX® codec support 
Driver Unit  40 mm Closed/Dynamic 
Frequency Response  8 - 22,000 Hz (using supplied cord)
Effective range via Bluetooth/NFC mode: 20 - 20,000 Hz 
Selectivity  3 distinct noise-canceling modes for use in different accoustical environments 
Sensitivity (db)  98 dB/mW (NC on with supplied cord)
100 dB/mW (NC off with supplied cord) 
Design  Over-the-head, NFC / Bluetooth, Noise Canceling 
Headband  Yes, Adjustable 
Noise Level  ON/OFF switch on ear-cup 
Plug  Detachable L-shaped stereo connecting cord 
Sensitivity  102 dB/mW (NC on with supplied cord)
101 dB/mW (NC off with supplied cord) 
Type of Use  Noise canceling/Bluetooth/Passive 
General Specifications
Power Source  DC 3.7 V: Built-in Lithium-ion rechargeable battery
DC 5 V: when charging using USB 
Cord  Detachable 47-1/4" (1.2 m) stereo connecting cord
19-3/4 in. (50 cm) Micro-USB cable 
Microphone  Omni directional, electret condenser
Effective frequency range: 100 Hz - 4,000 Hz 
Remote Control  Via Bluetooth® AVRCP: Play, Stop, Pause, FF, FR 
Battery Indicator  LED (Red/Blue) 
Battery Life (Approx)  Continuous music playback (BT/NC on): up to 13 hours, 19 hours NC off
Continuous communications (BT/NC on): up to 10 hours, 12 hours NC off
Standby time (BT on/NC on): 26 hours, 150 hours NC off
When using supplied Audio Connecting Cable (NC on) up to 24 hours 
Battery Type  Built-in Lithium-ion rechargeable battery 
Power Handling Capacity  100 mW (using supplied cord) 
Power Source  DC 3.7 V: Built-in lithium ion rechargeable battery
DC 5 V: When charging via USB 
Recharging Time  Appox. 2.5 hours from empty to full 
Impedance  23 ohms at 1 kHz (NC on using supplied cord)
50 ohms at 1 kHz (NC off using suppled cord) 
Sound Enhancer  SBC, AAC, and aptX® codec support 
Weights and Measurements
Cord Length (Approx.)  Stereo Connecting Cable: 47-1/4 inches (1.2 m)
Micro USB cable: 19.7 inches (50 cm) 
Weight (Approx.)  Approx. 8.64 oz. (245 g) - including battery, without cable 
Bluetooth® Technology  Bluetooth specification Version 3.0
2.4 GHz band (2.4000 GHz-2.4835 GHz
NFC  One-touch Listening with NFC (Near Field Communications) 
Network Transport Protocol  A2DP (Sampling frequency 44.1 kHz)
Transmission Range: 20-20,000 Hz
Line of sight approx.30 ft (10 m) 

  • Battery Life: 13 Hour 
  • Battery Type: Lithium Ion 
  • Brand: Sony 
  • Color: Black 
  • High Frequency Response: 20,000 Hz 
  • Low Frequency Response: 20 Hz 
  • Model: MDRZX770DC 
  • Noise Cancelling: Yes 
  • Range: 30 ft. 
  • Type of Headphones: Surrounds (Over & Around) the Ear 
  • Weight: 8.64 oz. 
  • Wireless: Yes