The chip model: CH340G Output voltage: 3.3V Input voltage: 5V WLAN-standard 802.11b / g / n PWM / I2C / SPI / UART Colour: multicolor Material: ABS Size: 10x6x3cm Package Contents: 1 * Kit Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.