In depth comparison and review of Sennheiser CX 400BT and LG TONE Free UFP9. Compare design, audio features, functions and other important specifications to easily choose the right headphones for you. Our goal is to help you uncover differences between the products and find the headphones that will best fit your needs.
| DESIGN AND DIMENSIONS | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Product Type | True wireless earphones - Bluetooth - wireless | True wireless earphones - Bluetooth - wireless | |
|---|---|---|---|
| Height | - | 2.83 cm | |
| Width | - | 2.12 cm | |
| Depth | - | 2.32 cm | |
| Weight | - | 5.2 g | |
| Dimensions & Weight Details | Earbud: 6 g Charging case: 37 g |
Earbud: 2.12 cm x 2.32 cm x 2.83 cm / 5.2 g Charging case: 5.45 cm x 3 cm x 5.45 cm / 36.7 g |
|
| Colour | White | Black | Charcoal black | |
| Earpad Material | - | Medical grade silicone | |
| Protection | - | Splashproof, IPX4 | |
| Recommended Use | Portable electronics | - |
| SOUND QUALITY | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Headphones Form Factor | In-ear | In-ear | |
|---|---|---|---|
| Headphones Technology | Dynamic | Dynamic | |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.1 | Bluetooth 5.2 | LG TONE Free UFP9 have a more advanced version of Bluetooth than Sennheiser CX 400BT. |
| Bluetooth Profiles | 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 | |
| Active Noise Cancelling | - | Yes | LG TONE Free UFP9 are equipped with active noice cancellation. |
| Sound Output Mode | Stereo | Stereo | |
| Sound Effects | - | Bass Boost, Treble Boost, Meridian EQ, Ambient Sound Mode, Meridian Sound Effect | |
| Frequency Response | 5 - 21000 Hz | - | |
| Total Harmonic Distortion (THD) | 0.08% | - | |
| Max Sound Pressure | 107 dB | - | |
| Diaphragm | 7 mm | 8 mm | LG TONE Free UFP9 have a thicker diaphragm than Sennheiser CX 400BT. |
| Features | - | Google Fast Pair |
| MICROPHONE | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Noise Cancelling | - | Yes | LG TONE Free UFP9 microphone can cancel out ambient noise. |
| Microphones Included | - | 3 |
| REMOTE CONTROL | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Controls | Volume control, answer/end, play/pause, next/previous track, reject call, pair mode, voice assistant, equaliser preset | Voice assistant |
|---|
| CABLE | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Cable Type | USB-C to USB-A cable - detachable - straight - 25 cm | - |
|---|
| FEATURES | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Features | Voice alerts, touch control | UVnano sanitising technology | |
|---|---|---|---|
| Internet of Things (IoT) Compatible | - | Yes | |
| Voice Control | - | Indirect | |
| Intelligent Assistant | Siri, Google Assistant | Google Assistant ready, Siri ready |
| BATTERY AND CHARGING | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Battery Type | Headphone battery rechargeable - Lithium Ion | Headphone battery rechargeable - Lithium Ion | |
|---|---|---|---|
| Battery Capacity | 55 mAh | 68 mAh | LG TONE Free UFP9 have a higher battery capacity than Sennheiser CX 400BT. |
| Battery Life | 7 hour(s) | 10 hour(s) | LG TONE Free UFP9 lasts longer on a single charge than the Sennheiser CX 400BT. |
| Battery Life Details | Continuous playback (50% volume): up to 7 hours Continuous playback (with included charging case): up to 20 hours |
Continuous playback (active noise-cancelling off): up to 10 hours Continuous playback (active noise-cancelling on): up to 6 hours |
|
| Charging Time | 1.5 hour(s) | - | |
| Included Qty | 2 | - |
| WIRELESS LINK | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Radio Transmitter Power | 10 mW | - |
|---|
| OTHERS | Sennheiser CX 400BT | LG TONE Free UFP9 |
|---|
| Included Accessories | 4 pairs of earpads (extra small, small, medium, large), charging case (420 mAh) | 2 pairs of ear tips (small, large), 3.5 mm to USB-C cable, wireless transmitter / charging case (390 mAh) | |
|---|---|---|---|
| Compliant Standards | Bluetooth Class 1, Directive 2006/66/EC, WEEE 2012/19/EU, Directive 2013/56/EU | - |
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