Key Features
- 7mm TrueResponse Drivers
- Up to 9 Hours of Battery Life
- Charging Case for 18 Extra Hours
- IPX4 Water & Sweat Resistance
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.
All-Day Battery Life
On a full charge the CX in-ear headphones gives you up to 9 hours of playback, and an additional 18 hours through the included charging case. Simply place the earbuds inside the case and close the lid to immediately activate the recharging process.
Quick Charge
Forgot to charge your CX earbuds? With the quick charge feature, that's not a problem. With just 10 minutes of charging inside the case, the earbuds can deliver up to 1 hour of playback.
Workout Friendly
Featuring IPX4-rated water resistance, the CX earbuds can withstand splashes and sweat, making them ideal for use in the gym.
Auto Call
Making it more convenient to receive calls hands-free, Sennheiser offers Auto Call. With Auto Call, incoming calls are automatically accepted once you remove the CX earbuds from the case.
Sidetone
When activated, this feature gives you the ability to hear yourself while on a call.
Additional Features
Voice prompts for pairing, calls, and more
Customizable touch controls
Four pairs of eartips for a customized and comfortable fit
Sennheiser 508973 Specs
Headphone
| Earpiece Design | In-Ear (Intra-Aural) |
| Driver Type | Dynamic |
| Driver Size | 0.3" / 7 mm |
| Active Noise Cancellation | No |
| Controls/Microphone Location | Controls: Earpiece (Side Unspecified)
Microphone: Earpiece (Side Unspecified) |
| Full Remote OS Support | Android, iOS |
Performance
| Frequency Response | 5 Hz to 21 kHz (Wireless) |
| Maximum Sound Pressure Level (SPL) | 110 dB at 1 kHz |
| Total Harmonic Distortion (THD) | 0.08% |
Microphone
| Number of Mics | 2 |
| Beamforming Support | Yes |
| Type | MEMS |
| Noise Canceling | Not Specified by Manufacturer |
| Frequency Response | 100 Hz to 10 kHz |
Wireless Connectivity
| Wireless Modulation | π/4 DQPSK, 8DPSK, GFSK |
| Supported Audio Codecs | AAC, SBC, aptX |
| Bluetooth Profiles | HFP, AVRCP, A2DP |
| Bluetooth | 5.2 LE |
| Bluetooth Power Class | 1 |
| Frequency | Bluetooth: 2.4 GHz (2.402 to 2.48 MHz) |
| Bluetooth Transmitter Power | 10 mW |
Battery
| Battery Chemistry | Lithium-Ion |
| Capacity (mAh) | 55 mAh |
| Runtime | 9 Hours (BT) |
| 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 |
Charging Case
| Additional Runtime | 18 Hours (BT) |
| Capacity | 400 mAh |
| Charging Interface | USB Type-C |
Environmental
| 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% |
Physical
| Color | Black |
| Water Resistance | Submersible |
| IP Rating | IPX4 |
| LED Indicator | Yes |
| Weight | Headphones:
0.2 oz / 6 g (Each)
Charging Case:
1.3 oz / 37 g |
Packaging Info
| Package Weight | 0.435 lb |
| Box Dimensions (LxWxH) | 7.2 x 5.2 x 1.9" |
