Input: 5V 2A USB-C Battery capacity: 1800mAh Bluetooth version: V5.0 Transmission distance: 10 meters Signal to noise ratio: 75dB Distortion: Less than 10 Output power: 2 x 5W Frequency response range: 100Hz-20kHz Function: 8 types of white noise, smart Bluetooth speaker, timing function, support for headphone external connection The product may be upgraded periodically; appearance and color may vary slightly. Please consider this before ordering if specific color or design is required. Color: Green Material: Plastic Package Contents: 1 x Speaker Only the above package content is included; other items are not included. Note: Due to light reflection and differences in display screens, the color in the image may vary slightly from the actual product. Measurement error allowed is +/- 1-3cm.