Side by side comparison and review of Audio-Technica ATH CKR7TW and Sennheiser CX 400BT. Compare design, sound quality and other key specifications and features to simplify the choice of your perfect headphones. Our goal is to make it easier for you to decide on the headphones that will best meet your expectations by revealing the main differences between the products.
| DESIGN AND DIMENSIONS | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 8 g | - | |
| Dimensions & Weight Details | Headphones: 8 g Charging case: 75 g |
Earbud: 6 g Charging case: 37 g |
|
| Colour | Grey | White | Black | |
| Recommended Use | - | Portable electronics | |
| Bluetooth Range (Operating Distance) | 10 m | - |
| SOUND QUALITY | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.1 | Sennheiser CX 400BT have a more advanced version of Bluetooth than Audio-Technica ATH CKR7TW. |
| Bluetooth Profiles | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | Hands-Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) | |
| Bluetooth Audio Codec | SBC, AAC, aptX | SBC, AAC, aptX | |
| Sound Output Mode | Stereo | Stereo | |
| Frequency Response | 5 - 45000 Hz | 5 - 21000 Hz | Audio-Technica ATH CKR7TW offer a larger frequency range than Sennheiser CX 400BT. |
| Max Input Power | 100 mW | - | |
| Total Harmonic Distortion (THD) | - | 0.08% | |
| Impedance | 16 Ohm | - | |
| Max Sound Pressure | - | 107 dB | |
| Diaphragm | 11 mm | 7 mm | Audio-Technica ATH CKR7TW have a thicker diaphragm than Sennheiser CX 400BT. |
| Features | True wireless | - |
| MICROPHONE | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Operation Mode | Omni-directional | - | |
| Frequency Response | 100 - 10000 Hz | - | |
| Sensitivity | -38 dB | - |
| REMOTE CONTROL | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Controls | Volume, answer/end | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset |
|---|
| CABLE | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Cable Type | USB charge cable - detachable - 30 cm | USB-C to USB-A cable - detachable - straight - 25 cm |
|---|
| FEATURES | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Features | - | Voice alerts, touch control | |
|---|---|---|---|
| Intelligent Assistant | - | Siri, Google Assistant |
| BATTERY AND CHARGING | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Battery Type | Headphone battery rechargeable - lithium polymer | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | - | 55 mAh | |
| Battery Life | 6 hour(s) | 7 hour(s) | Sennheiser CX 400BT lasts longer on a single charge than the Audio-Technica ATH CKR7TW. |
| Battery Life Details | - | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
|
| Charging Time | 2 hour(s) | 1.5 hour(s) | Sennheiser CX 400BT recharge faster than Audio-Technica ATH CKR7TW. |
| Included Qty | - | 2 |
| WIRELESS LINK | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Radio Transmitter Power | - | 10 mW |
|---|
| OTHERS | Audio-Technica ATH CKR7TW | Sennheiser CX 400BT |
|---|
| Included Accessories | Charging case / portable power bank, 4 pairs of ear tips (XS, small, medium, large) | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | |
|---|---|---|---|
| Compliant Standards | - | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | |
| Service & Support | Limited warranty - 2 years | - |
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