1. Safe Sound 2. legendary sound designed to never exceed 85dB making them for even the youngest music fans. 3.Bluetooth enabled 4.A wireless connection up to 15 meters away means no wires to worry about. 5.Built-in mic 6.Help your stay connected to the world with the built-in mic. They can chat easily with friends and family during downtime, or teachers while they're busy learning. 7.30-hour battery life 8.30-hour battery life and quick-recharge with user-friendly USB type C. And for a super quick top-up, get 2 hours of battery life with 5 minutes charge. 9.Easy controls 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.