Edifier Comfo Run Open-Ear Wireless Sports Headphones -Black Open-ear design ensures comfort and minimizes sound leakage 16.2mm dynamic drivers deliver smooth highs and deep bass IP55-rated dust and splash resistance for long durability 17 hours long playtime with fast charging: 15 minutes for 5 hours of use Customizable EQ via the EDIFIER ConneX app Elastic, silicone-coated neckband for a comfortable, secure fit 80ms low latency for smooth gaming Select Color: Black Comfort and Secure, Fit for All-Day Wearing With 2 large 16.2mm dynamic speaker drivers, the product can deliver sooth high pitch and deep powerful bass. Low frequency is reconstructed in real time to recreate a natural and live sound. With 2 built-in microphones and beamforming algorithm, you can have clear phone conversation at any time. Designed with special acoustic cavity for no sound leakage to protect your privacy. You can customize sound character to your personal preference - Classic or Bass Boost. The headphone offers up to 17 hours playtime when fully charged, and a 5 hours playtime in just 15 minutes charging. IP55-rated dust and splash resistance for long durability. Specification Bluetooth V5.3 Bluetooth Protocol A2DP, AVRCP, HFP Playtime 17 hours Fast Charging: 15 minutes = 5 hours Charging Time: About 1.5 hours Input: 5V ⎓ 1A Audio Coding SBC, AAC Driver 16.2mm Dynamic Driver Frequency Response 20Hz - 20kHz Output Sound Pressure Level 90dB ± 3dB(A) IP Rating IP55