Xiaozhi Card is an ESP32-S3-based smart voice terminal. It supports 4G and Wi-Fi connectivity and is equipped with a 2.7-inch capacitive e-ink touchscreen, microphone, and speaker, delivering a smooth and user-friendly voice-interaction experience. With an onboard 300 mAh battery, the device features charging management and battery level detection for long standby time and convenient charging.
Xiaozhi Card offers three wake-up methods—button, touch, and voice—to suit different user habits. The magnetic design allows easy attachment to the base, a refrigerator, or any metal surface. Pogo-pin magnetic contacts handle both communication and charging between the host and the base. The base provides a USB Type-C port, a Grove port, reset and download buttons, and an RGB status LED. Ready to use out of the box with simple configuration, it is an ideal choice for voice assistants, digital assistants, MCP terminals, and other smart-interaction scenarios.
4G network (LTE Cat.1) supporting nano SIM cards from China Mobile / China Unicom / China Telecom
300 mAh battery with charge/discharge management and battery level/status detection
Built-in microphone and speaker (volume adjustable)
64 MB SD NAND onboard
Triple wake-up: rear button, touch, or voice
Ready to use, easy to configure
Magnetic design, attachable to the base or metal surfaces such as a refrigerator
Pogo-pin magnetic contacts for communication and charging with the base
Lanyard hole and screw holes for versatile mounting
Reserved lanyard hole and rear M2 screw hole, suitable for various scenarios
Xiaozhi Card Base
USB Type-C port for communication and power supply
HY2.0-4P Grove port
Reset / download button
RGB status LED
Pogo-pin magnetic contacts for communication and charging with the host
LEGO-compatible holes for easy mounting
Includes
1 × Xiaozhi Card host
1 × Magnetic charging base
1 × Magnetic charging base adapter
1 × China Mobile IoT SIM card (1 GB/month Xiaozhi dedicated data, valid for one year)
2 × M3 × 6 mm Screws (pan head, self-tapping)
1 × Hex Key L-Shape 2.5 mm (For M3 Screw)
Applications
Xiaozhi Card Kit Voice Assistant
Voice chat
Digital assistant
MCP terminal
Specifications
Specification
Parameter
MCU
ESP32-S3-PICO-1-N8R8
Flash
8MB
PSRAM
8MB
Display Model
GDEY027T91
Display Size
2.7 inch
Display Grayscale
1-bit black and white
Display Resolution
176 x 264
Touch Panel Driver
FT6336U
Battery Capacity
300mAh @3.7V
Battery Life (Standby)
4G network: 3h18min Wi-Fi network: 3h15min
Power Consumption
Operating current (powered via dock, wake word, volume 50%): DC 5.12V@388.50mA Operating current (external 5V supply, wake word, volume 50%): DC 54.31V@177.11mA Sleep current (4G mode): DC 4.27V@46.28mA Power-off current: DC 4.26V@15.28uA
4G Module
ML307R-DL (LTE Cat.1)
Audio Codec IC
ES8311
Charging Management IC
AW32001
Fuel Gauge
BQ27220
SD NAND
64MB
Product Size
Handset: 84.0 x 54.0 x 8.0mm Dock: 56.0 x 46.0 x 34.0mm
Product Weight
45.3g (handset)
Package Size
70.0 x 100.0 x 26.0mm
Gross Weight
92.9g
Learn
SIM Card
The product comes with a China Mobile IoT SIM card that includes 1 GB of XiaoZhi dedicated data per month and is valid for one year, counted from the first time it goes online. After the validity period, you can renew it at http://iotwe.yshiqi.com/recharge.php. If the SIM card is still within the one-year trial period, the Recharge Management Page will display “This card is not eligible for online recharge” (as shown below), but this does not affect normal use. We recommend recharging after the trial period expires.
The included SIM card is for this product only
The device is shipped with the matching IoT card (nano SIM) pre-installed. Do not use this SIM card in other devices or for other purposes, otherwise it will be locked. If you use a 4G network, you need to install a nano-size SIM card as shown below. If installed incorrectly, carefully remove it with tweezers or similar tools to avoid damaging the device and SIM card. The SIM card supports hot-swapping; no reboot is required after insertion. However, establishing a 4G connection from a cold start takes some time, typically around 20 seconds, depending on the carrier’s signal strength.
SIM Card Compatibility
In addition to the included SIM card, you can also use other cards. Supported Operators: China Mobile, China Unicom, China Telecom Supported Bands: LTE-FDD Band 1 / 3 / 5 / 8 LTE-TDD Band 34 / 38 / 39 / 40 / 41
Button Operations
Power On:Long-press for 2 s the round button on the back of Xiaozhi Card.
Power Off:Double-click (two quick presses) the rear round button. While powered on, swipe from top to bottom on the screen to bring up the power-off menu as well.
Standby / Wake: While powered on, single-click the rear button to toggle between standby (idle) and wake (listening) states.
Reset: With Xiaozhi Card attached to the Base and powered via USB, short-press the button on Xiaozhi Card Base to reboot the device.
Download Mode: With Xiaozhi Card attached to the Base and powered via USB, long-press the button on Xiaozhi Card Base until the green LED lights up to enter download mode.
Base RGB LED Status
Green: Listening
Blue: Charging
Charging Note
The device remains powered on during charging and cannot be shut down.
Device Reset
Reset Instruction
If Xiaozhi Card becomes unresponsive, connect it to a powered charging base and press the base’s reset button to reboot.