RUIZU
RUIZU is a brand specializing in designing and developing sports MP3 players. They have mature production technology and rich experience. RUIZU Sports mp3 player is the most minor, lightest, and most affordable sport mp3 player. It is designed for sports enthusiasts who love music when running or working out in the gym. It's waterproof, dustproof, and shockproof, making you enjoy music in any situation. More than that, it's designed to ensure you're comfortable running or doing sports activities.