The Green Lion GK-500 Wireless Headphone is meant for kids. It gives one a safe and enjoyable listening experience. These headphones use 40mm speakers, made of durable PP + ABS material, and child-safe sound, ensuring the optimum sound without harming the ears of a tiny human. Using Bluetooth V5.4 technology, they ensure a very stable connection within a range of 10 meters. Equipped with a 200mAh battery, the headphones offer 20 hours of playtime and 180 days of standby time. Fast charging with Type-C takes only 1.5 hours to fully recharge. The paired-up ear cushions are comfortable and can be worn for long durations. With an impedance of 32±4Ω and an audio frequency range between 20Hz-20kHz, they certainly produce bright and clear sounds. For all those moments of music, adventure, or fun, this would be the ideal audio product for your child.