The Green Lion GK-500 Wireless Headphone is designed specifically for children to offer a safe and enjoyable audio experience. Equipped with 40mm speakers and child-safe sound limits, it protects delicate young ears while delivering clear audio. Crafted from durable PP and ABS materials, these headphones feature soft, padded ear cushions for maximum comfort during long use, learning sessions, or travel. Utilizing Bluetooth V5.4 technology, they maintain a stable wireless connection up to 10 meters. The built-in 200mAh battery provides up to 20 hours of playtime and charges quickly via Type-C in just 1.5 hours. Key features Child-safe sound limits protect young ears during listening Up to 20 hours of continuous playtime on a single charge Advanced Bluetooth V5.4 for a stable connection up to 10m Soft padded ear cushions ensure long-wearing comfort Durable PP and ABS material construction built for kids Fast Type-C charging recharges fully in 1.5 hours Up to 180 days of standby time Technical Specifications Property Value Material PP + ABS Bluetooth Version V5.4 Transmission Range 10m Speaker Size 40mm Battery Capacity 200mAh Playtime Up to 20 Hours Standby Time 180 Days Charging Port Type-C Charging Time 1.5 Hours Frequency Response 20Hz - 20kHz Impedance 32 ± 4? Sensitivity 100 ± 10%