OPEN-BACK DESIGN FOR COMFORT AND SAFETY - Lightweight wraparound frame and wireless open-ear cups provide a snug fit around the earbones, reducing ear fatigue and pain during extended listening sessions. This design also allows you to maintain awareness of your surroundings for a safer outdoor experience while enjoying your music. PREMIUM SOUND EXPERIENCE - Utilizing bone conduction technology, sound is transmitted directly to your inner ear via cheekbones, bypassing the eardrum for a high-quality 360 stereo surround audio experience, with emphasis on bass. Advanced sound leakage elimination technology suppresses sound leakage, filters ambient noise, and enhances clarity of human voices. IPX8 WATERPROOF and SWIM-READY - These earphones are professionally designed to be IPX8 waterproof, sweatproof, dustproof, and moistureproof. Tested to withstand depths of up to 99 feet underwater, they're perfect for swimming and worry-free use during rainy workouts. Enjoy a secure fit that keeps the earphones in place, boosting motivation and enhancing your workout experience. EQUIPPED WITH DIGITAL DISPLAY - Equipped with an LED digital display screen, after turning on, it will display the remaining power and listening mode (Bluetooth mode or MP3 mode), which is more clear at a glance. It comes with a 32GB memory card that can store 10,000and songs, allowing you to enjoy music even without a mobile phone. The latest Bluetooth 5.4 chip can improve performance, stable and fast connection and enhanced sound quality. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.