Experience Immersive Audio And Seamless Communication With Xundd X21 Enc Wireless Earbuds. Boasting Superior Sound Quality Thanks To A Unique Whale Cavity Design, These Earbuds Ensure Rich, Detailed Audio. Enjoy Crystal Clear Calls With Dual-Microphone Noise Reduction, While Environmental Noise Cancellation (Enc) Technology Minimizes Background Noise For Uninterrupted Music Enjoyment. Product Specifications: Manufacturer: Xundd Bluetooth Version: 5.3 Distance: ≈10 Meters Headphone Battery: 35Mah (L/R) Headphone Box: 230Mah Charging Time: About 1 Hour Standby Time： 96H (With Charging Box) Interface: Type-C