> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/insight-2-user-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://emotiv.gitbook.io/insight-2-user-manual/introduction/technical-specifications.md).

# Technical specifications

|                       | INSIGHT 2                                          |
| --------------------- | -------------------------------------------------- |
| Number of channels    | 5 (plus CMS/DRL reference on left mastoid)         |
| 10-20 positions       | AF3, AF4, T7, T8, Pz                               |
| Sampling method       | Sequential sampling. Single ADC                    |
| Sampling rate         | 128 SPS (2048 Hz internal)                         |
| EEG resolution        | 16 bits 1 LSB = 0.128μV (16 bit ADC)               |
| Bandwith              | 0.5 - 45Hz, digital notch filters at 50Hz and 60Hz |
| Filtering             | Built-in digital 5th order Sinc filter             |
| Dynamic range         | 8400 uV(pp)                                        |
| Coupling mode         | AC coupled                                         |
| Connectivity          | Bluetooth 5.0 backwards compatible                 |
| Battery capacity      | LiPo battery 430mAh                                |
| Battery life          | Up to 20 hours                                     |
| Impedance Measurement | Real-time contact quality using patented system    |
| Motion sensor         | ICM-20948                                          |
| Accelerometer         | 3-axis +/-4g                                       |
| Gyroscope             | Output as Quaternion                               |
| Magnetometer          | 3-axis +/- 4900 uTesla                             |
| Motion sampling       | 32 Hz                                              |
| Motion Resolution     | 16-bit BLE                                         |
| Quanterion Output     | Yes                                                |
| Sensor Material       | Semi-dry polymer                                   |


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