The M421SP is a portable Bluetooth speaker designed for dynamic sound and karaoke use. Here's a breakdown of its features and specifications: Sound Quality: It offers dynamic sound with a 4\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\" speaker, providing good audio quality for various types of music and vocal performances. Karaoke Functionality: The speaker is equipped with karaoke features, making it suitable for singing along to your favourite songs. Dual Wireless Microphones: It includes two wireless microphones, allowing you to perform duets or have a second vocalist. Additionally, the built-in voice changer adds fun and versatility to your performances. IT comes with a durable Grab handle, that makes it easy to carry along. Connectivity Options: It provides multiple connectivity options, including a Type C port, USB port, AUX IN, and support for memory cards, making it easy to connect various devices. Output Power: The speaker has a power output of 60W, which should provide sufficient volume for personal or small gatherings. Signal-to-Noise Ratio: The signal-to-noise ratio is 75dB, which indicates the quality of the audio signal and the reduction of background noise. Wireless Range: It offers a wireless range of up to 10 meters, allowing you to move around while using the speaker. Battery Capacity: The built-in battery has a capacity of 5400mAh, which provide decent playback time. Power Input: It can be charged using a DC 5V power source, which is a standard power input for many electronic devices. Frequency Range: The frequency range is 60Hz to 16KHz, indicating the range of audio frequencies the speaker can reproduce. Charging Time: The charging time for the battery is between 3-5 hours, depending on the current charging conditions. In summary, the M421SP is a feature-rich portable Bluetooth speaker designed for karaoke and general entertainment. It offers various connectivity options, wireless microphones, and visual effects with its RGB lighting, making it suitable for parties, gatherings, and karaoke sessions.