USA 
CX True Wireless In-Ear Headphones (Black)
Product Description
Listen to clear, customized sound without wires using the Sennheiser CX True Wireless In-Ear Headphones. Engineered with bespoke Sennheiser TrueResponse 7mm drivers, the CX earbuds are designed to deliver clear and accurate music reproduction. Using the Smart Control app on your iOS or Android device, this audio can be customized to your liking with bass boost and equalizer adjustments. In addition to audio entertainment, the CX earbuds can be used throughout your day to communicate via hands-free calling, and keep you informed with access to your mobile device's digital assistant.
| Item Type | |
| Number of Included Headphones/Receivers | |
| Number of Included Transmitters | |
| Number of Included Headsets | |
| Number of Included Transceivers | |
| Headphone | |
| Earpiece Design | In-Ear (Intra-Aural) |
| Earpiece Swivel | |
| Earpiece Connection / Wearing Style | |
| Foldable | |
| Number of Earpieces | |
| Sound Field | |
| Earpad Size | |
| Driver Type | Dynamic |
| Number of Drivers | |
| Driver Size | 0.3" / 7 mm |
| Diaphragm | |
| Magnet Type | |
| Voice Coil | |
| Impedance | |
| Active Noise Cancellation | No |
| Controls/Microphone Location | Controls: Earpiece (Side Unspecified) Microphone: Earpiece (Side Unspecified) |
| Full Remote OS Support | Android, iOS |
| Sensors | |
| Contact Pressure | |
| Performance | |
| Frequency Response | 5 Hz to 21 kHz (Wireless) |
| Resonant Frequency | |
| Sensitivity | |
| Matching Tolerance | |
| Maximum Sound Pressure Level (SPL) | 110 dB at 1 kHz |
| Maximum Power Handling | |
| Functional Bias Voltage | |
| Electrostatic Capacitance | |
| Output Power | |
| Volume Limiting | |
| Noise Attenuation | |
| Total Harmonic Distortion (THD) | 0.08% |
| SNR | |
| CMRR | |
| Channel Separation | |
| Storage Capacity | |
| Microphone | |
| Number of Mics | 2 |
| Beamforming Support | Yes |
| Type | MEMS |
| Diaphragm Size | |
| Mic Boom Location | |
| Pickup Pattern | |
| Noise Canceling | Not Specified by Manufacturer |
| Frequency Response | 100 Hz to 10 kHz |
| Operating Voltage | |
| Sensitivity | |
| Maximum SPL | |
| Impedance | |
| SNR | |
| Distortion | |
| Equivalent Noise Level | |
| Wireless Connectivity | |
| Wireless Transmission | |
| Number of RF Channels | |
| RF Bandwidth | |
| Max Systems per Setup | |
| Wireless Modulation | π/4 DQPSK, 8DPSK, GFSK |
| DECT Standard | |
| Duplex Mode | |
| RF Channel Access Method | |
| Latency | |
| Speech Encoding | |
| Transmission Speed | |
| Approximate RF Sensitivity | |
| Supported Audio Codecs | AAC, SBC, aptX |
| Bluetooth Profiles | HFP, AVRCP, A2DP |
| Bluetooth | 5.2 LE |
| Bluetooth Power Class | 1 |
| Wireless Range | |
| Frequency | Bluetooth: 2.4 GHz (2.402 to 2.48 MHz) |
| Transmitter Power | 10 mW |
| Multipoint Support | |
| Maximum Paired Devices | |
| NFC | |
| Wireless Chipset | |
| Transmitter Host Connection | |
| Encryption | |
| Audio Connector to Source | |
| Connector Plating | |
| Adapter (Included) | |
| Cable Design | |
| Audio Connector to Earpiece | |
| Cable Length | |
| Cable Length | |
| Cable Color | |
| Cable Conductor Material | |
| Battery | |
| Battery Type | |
| Battery Type | |
| Battery Chemistry | Lithium-Ion |
| Battery Chemistry | |
| Capacity (mAh) | 55 mAh |
| Runtime | 9 Hours (BT) |
| Runtime | |
| Quick Charging Times | 10 Minutes for 1 Hour |
| Recharge Time | 1.5 Hours |
| DC Input Power | 3.7 VDC |
| Wireless Charging | None |
| Charging Port | Pins |
| Charging Cable Length | 0.8' / 0.2 m |
| Number of Channels | |
| Users per System | |
| I/O Connectors | |
| Antenna | |
| Audio Decoding | |
| Number of Charging Ports | |
| AC/DC Power Adapter | |
| AC Input Power | |
| Power Consumption | |
| Charging Case | |
| Additional Runtime | 18 Hours (BT) |
| Battery Chemistry | |
| Capacity | 400 mAh |
| Charging Time | |
| Charging Interface | USB Type-C |
| Platform Support | |
| OS Compatibility | |
| Required Hardware | |
| Internet Connection | |
| Environmental | |
| Charging Temperature | |
| Operating Temperature | 32 to 104°F / 0 to 40°C |
| Storage Temperature | -13 to 158°F / -25 to 70°C |
| Operating Humidity | 10 to 80% |
| Storage Humidity | 10 to 90% |
| Certifications | |
| Physical | |
| Color | Black |
| Water Resistance | Submersible |
| IP Rating | IPX4 |
| LED Indicator | Yes |
| Material of Construction | |
| Dimensions | |
| Weight | Headphones: 0.2 oz / 6 g (Each) Charging Case: 1.3 oz / 37 g |
| Warranty Length | Limited 2-Year Warranty |