Air Conduction Sports Wireless Headset delivers crisp, balanced sound with reliable wireless performance for work, study, travel, and workouts. Designed for all‑day comfort, it pairs quickly, holds a stable connection, and keeps you focused with clear audio and an ergonomic fit. Perfect for music, calls, and meetings. Key details: Wireless Version： V5.3 Support Range: 2.402-2.480Ghz Connection Distance: 10m Speakers: 13mm, deep bass Speaker Size: 13mm Impedance:16+20%2 Sensitivity: 108-3dBAT 1K Hz Frequency Response: 20-20kHz Battery: 65mah; Play Time: 4h Charging Time: lh; Charging Connector： Micro.