Sony WH-CH720N Help Guide - Page 128
Specifications
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Help Guide Wireless Noise Canceling Stereo Headset WH-CH720N Specifications Headset Power source: DC 3.85 V: Built-in lithium-ion rechargeable battery DC 5 V: When charged using USB Operating temperature: 0 °C to 40 °C (32 °F to 104 °F) Charging time: Approx. 3.5 hours (About 60 minutes of music playback is possible after 3 minutes charging. About 4.5 hours of music playback is possible after 10 minutes charging.) Note Charging and usage hours may be different depending on the conditions of use. Charging temperature: 5 °C to 35 °C (41 °F to 95 °F) Mass: Approx. 192 g (6.8 oz) Impedance: 325 Ω (1 kHz) (when connecting via the headphone cable with the headset turned on) 31 Ω (1 kHz) (when connecting via the headphone cable with the headset turned off) Sensitivity: 108 dB/mW (when connecting via the headphone cable with the headset turned on) 99 dB/mW (when connecting via the headphone cable with the headset turned off) Frequency response: 7 Hz - 20 000 Hz (JEITA) (when connecting via the headphone cable with the headset turned on) Communication specification Communication system: Bluetooth Specification version 5.2 Output: Bluetooth Specification Power Class 1 Maximum communication range: 128
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