NBL-107 Bluetooth earphone microphone with 20 hours of continuous talk time and 15 days of continuous standby time

Long-lasting design with 20 hours of talk time and 15 days of standby time. Noise and echo cancellation reduces noise during calls for clearer conversations. Resistant to rain, sweat, and other water droplets with iPX4 waterproofing. Ear hooks and in-ear earphone pads in three sizes (one each of S, M, and L). Redial function / Auto power-off function.