Specifications:Bluetooth 5.0 technology ensures the high stability, no delay, no interference, and low power consumption of this earphone.With multifunctional one-key control, this headset will automatically connect to the last device after opening.Unique sound quality design and CVC8.0 digital noise reduction technology provide you with perfect sound, you can feel more realistic music.The earplugs and charging case is waterproof, which is perfect for gym sweating.Equipped with a 250mah large-capacity battery compartment, the wireless headset can be used for more than 4 hours of playback time after a single charge, and the compact charging box can be used for an additional 12 hours.Item Name: bluetooth-compatible EarphoneMaterial: ABSBluetooth Protocol: V5.0Noise Reduction Version: CVC8.0Transmission Distance: 10 MetersCharging Case Battery Capacity: 150mAh(Included)Single Earphone Battery Capacity: 50mAh(Included)Charging Time: about 1 HourPlaying/Talking Time: about 4 HoursFeatures: High Stability, No Delay, Waterproof, Large-Capacity Battery, Automatically ConnectSize: 5cm x 5cmx 3cm/1.97" x 1.97" x 1.18" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Earphone1 x Charging Cable1 x User Manual