In depth comparison and review of Lenovo ThinkPad X1 and Sennheiser HD 250BT. 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 | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Product Type | Headphones - Bluetooth - wireless | Headphones - Bluetooth - wireless | |
|---|---|---|---|
| Weight | 195 g | 125 g | Sennheiser HD 250BT are lighter than Lenovo ThinkPad X1 headphones. |
| Recommended Use | - | Portable electronics |
| SOUND QUALITY | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Headphones Form Factor | On-ear | On-ear | |
|---|---|---|---|
| Headphones Technology | - | Dynamic | |
| Ear Cups Type | - | Closed | |
| Adjustable Headband | Yes | Yes | |
| Foldable | Yes | - | Lenovo ThinkPad X1 can be folded. |
| Connectivity Technology | Wireless | Wireless | |
| Wireless Technology | Bluetooth | Bluetooth | |
| Bluetooth Version | Bluetooth 5.0 | Bluetooth 5.0 | Both headphones have the same Bluetooth version. |
| Bluetooth Profiles | Hands-Free Profile (HFP), 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, apt-X LL, mSBC | SBC, AAC, aptX, apt-X LL | |
| Active Noise Cancelling | Yes | - | Lenovo ThinkPad X1 are equipped with active noice cancellation. |
| Active Noise Cancelling Technology | Environmental Noise Cancellation (ENC) / Hybrid ANC | - | |
| Noise Isolating | - | Yes | Sennheiser HD 250BT are equipped with a noise isolating function. |
| Sound Output Mode | - | Stereo | |
| Frequency Response | 20 - 20000 Hz | 20 - 22000 Hz | Sennheiser HD 250BT offer a larger frequency range than Lenovo ThinkPad X1. |
| Max Input Power | 30 mW | - | |
| Total Harmonic Distortion (THD) | - | <0.3% | |
| Sensitivity | 111 dB | 110 dB | Lenovo ThinkPad X1 have higher sensitivity than Sennheiser HD 250BT. |
| Impedance | 32 Ohm | - | |
| Diaphragm | 40 mm | 32 mm | Lenovo ThinkPad X1 have a thicker diaphragm than Sennheiser HD 250BT. |
| Dynamic Range | 110 dB | - | |
| Simultaneously Connectable Devices Qty (Multipoint) | 2 | - | Lenovo ThinkPad X1 have the ability to connect to multiple devices simultaneously. |
| Features | - | Audio prompts |
| MICROPHONE | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Form Factor | Built-in | Built-in | |
|---|---|---|---|
| Microphone Technology | - | Electret condenser | |
| Microphone Operation Mode | - | Omni-directional | |
| Noise Cancelling | Yes | - | Lenovo ThinkPad X1 microphone can cancel out ambient noise. |
| Frequency Response | 50 - 8000 Hz | 100 - 10000 Hz | Sennheiser HD 250BT offer a larger microphone frequency range than Lenovo ThinkPad X1. |
| Dynamic Range | 95 dB | - | |
| Signal-To-Noise Ratio | 19 dB | - |
| REMOTE CONTROL | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Controls | - | Volume, on/off, answer/end, hold, play/pause, next/previous track, reject call |
|---|
| CABLE | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Cable Type | USB-C to USB-A cable - 1.3 m USB-C cable - 1.3 m |
USB-C charge cable - detachable |
|---|
| BATTERY AND CHARGING | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Battery Type | Headphone battery rechargeable | Headphone battery rechargeable | |
|---|---|---|---|
| Battery Capacity | - | 190 mAh | |
| Battery Life | 20 hours | 25 hour(s) | Sennheiser HD 250BT lasts longer on a single charge than the Lenovo ThinkPad X1. |
| Battery Life Details | (noise cancelling OFF): up to 20 hours Continuous playback: up to 15 hours |
- | |
| Charging Time | 2 hours | 3 hour(s) | Lenovo ThinkPad X1 recharge faster than Lenovo ThinkPad X1. |
| CONNECTIONS | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Connector Type | Headphones (24 pin USB-C) | - |
|---|
| OTHERS | Lenovo ThinkPad X1 | Sennheiser HD 250BT |
|---|
| Included Accessories | Carrying case | USB-C charging cable | |
|---|---|---|---|
| Compatibility | - | iPhone, Android phone | |
| Compliant Standards | - | Bluetooth Class 1 | |
| Service & Support | Limited warranty - 1 year | - |
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