how to convert mp3 to wav

...MP3 WMA WAV APE FLAC Wireless Charger Speaker Support Audio Formats Converting OZZIE is a leading brand of Wireless Charger Speaker, providing high-quality OEM products that are reliable and easy to use. It weighs just 335g, and supports wireless charging at 5W, 7.5W, 10W and 15W (max). It also supports TWS pairing and hands-free calls, and comes with a variety of music formats such as MP3/WMA/WAV...

...MP3 Module With Onboard Microphone Specifications: 1, VS1003 supports audio decoding formats: MP3, MP3 + V, WMA, WAV, MIDI, SP-MIDI 2, the separate analog, digital and IO power supply; serial data and control interface (SPI) 3,1 headphones and audio output interface, with internal PLL clock frequency multiplier; quality stereo digital to analog converter (DAC); 16 bits Scalable on-chip analog to digital converter...

... Push button 5pcs in a sticker. 100pcs an inner box. 600pcs in a master carton OTP writing NOTE: 1. Customer's music in MP3 or WAV format can be converted. 2. Musical greeting card can be customized.