> For the complete documentation index, see [llms.txt](https://emotiv.gitbook.io/x-trodes-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/x-trodes-user-manual/specifications-and-information/technical-specifications.md).

# Technical specifications

### DAU

* Storage capacity: 32 GB
* Operating time: 8-12 hours (montage dependent)
* Dimensions: 48x38x19 mm
* Weight: 28 g
* Battery: LiPo battery 500 mAh
* Current consumption: 60 mA
* Operating voltage range: 3.6-4.2 V
* Number of channels: Up to 16 channels (montage dependent)

### EEG/EOG/EMG/ECG

* Sampling rate: Transmitted: 250 S/s
* Dynamic range: ±12.5 mV
* Bandwidth: 0.32-750 Hz
* Resolution: 16 bit
* Input Impedance: 10 Mohm

### IMU

* Accelerometer: 3-axis, 16 g
* Gyroscope: 3-axis ±2000°/sec
* Sampling rate: Transmitted: 125 S/s
* Dynamic range: -180° to 180°
* Resolution (nominal): 16 bit

### Environmental conditions

* Temperature (operation/ transport/ storage): +5°C to +40°C (+41°F to +104°F)
* Relative Humidity (operation/ transport/ storage): 15-85%
* Pressure: withstands atmospheric pressures from 70 kPa to 106 kPa

<table><thead><tr><th width="166.33333333333331">Montage</th><th width="201">xtr EEG16</th><th>xtr EEG12</th><th>xtr EXG2</th></tr></thead><tbody><tr><td>SKU</td><td>XTELC046GM05</td><td>XTELC048GM05</td><td>XTELC0002005RM</td></tr><tr><td>Sensor type</td><td>Passive, dry</td><td>Passive, dry</td><td>Passive, dry</td></tr><tr><td>Number of channels</td><td>16</td><td>12</td><td>2</td></tr><tr><td>Modalities</td><td><p>EEG x14</p><p>EOG x2</p></td><td>EEG</td><td>EEG</td></tr><tr><td>International 10-20 locations</td><td>AF7, AF8, FP1, FP2, L1, L3, L4, L5, L8, R1, R3, R4, R5, R8, E1, E2</td><td>AF7, AF8, L1, L3, L4, L5, L8, R1, R3, R4, R5, R8</td><td>FP1, FP2</td></tr><tr><td>Device location</td><td>Forehead</td><td>Back neck</td><td>Forehead</td></tr><tr><td>GND location</td><td>Nose</td><td>Back neck</td><td>Forehead</td></tr></tbody></table>