# What’s in the box?

#### Multi-electrode patch

An ultra-thin, soft, and flexible sensor conforms to the skin, allowing prolonged and stable high-quality signals. The patch is composed of carbon and silver conductive inks printed on thin elastic film. A medical-grade adhesive layer passivates its internal surface and simply attaches to the skin.

<figure><img src="https://4003583744-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXj3qh8XNOWaWPHFBHGkm%2Fuploads%2FKmge29azGIMOaatNDdAp%2FWelcome1_Patches.jpg?alt=media&#x26;token=eb071391-36c3-41c6-ba9b-9c7f3b52c299" alt="Multi-electrode patch"><figcaption></figcaption></figure>

#### DAU (Data Acquisition Unit)

The DAU is a compact wireless device that amplifies and records the acquired electrophysiological signals and transmits them to a mobile device via a Bluetooth (BT) connection. It supports up to 16 single-ended channels. Each channel is amplified relative to the ground (GND) electrode printed on the same multi-electrode patch. The DAU is attached to the patch via a double-sided adhesive tape.

Included inside the DAU is a V30 speed class MicroSD card.

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Note: If you choose to replace the MicroSD card, verify that it is formatted as FAT32 with 64kb allocation unit size.
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<figure><img src="https://4003583744-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXj3qh8XNOWaWPHFBHGkm%2Fuploads%2FCYVYQq11aSRNAal46n88%2FWelcome2_DAU.jpg?alt=media&#x26;token=1a1d72b9-58ff-47f9-a88d-d89873c1cb9c" alt="DAU (Data Acquisition Unit)"><figcaption></figcaption></figure>

#### X-trodes carry case

The carrying case includes compartments for the comfortable storage of your equipment.

<figure><img src="https://4003583744-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXj3qh8XNOWaWPHFBHGkm%2Fuploads%2F5fSUsoSkStcTgCbk5okL%2FWelcome3_Case.jpg?alt=media&#x26;token=49439b54-f705-4ef3-9b80-d4b7f80eb230" alt="X-trodes carry case"><figcaption></figcaption></figure>

#### USB-C charging cable

To charge the DAU, connect it to a 5V DC power supply.

{% hint style="info" %}
This User Manual describes the X-trodes system, its components, and their uses. The X-trodes system is not a medical device and is not intended for medical use. For any additional issues, contact us at <hello@emotiv.com>.
{% endhint %}