High-quality Bluetooth-compatible 5.3 chip for long-distance and fast transmission with no delay. HD-compatible microphone with intelligent noise reduction for clear calls. 8mm dynamic coil provides panoramic stereo sound for immersive music experience. Large-capacity charging compartment with LED digital power display for longer battery life. Ergonomically designed, waterproof, and sweatproof for comfortable wearing. Item Name: Earphone Material: Plastic Connection Method: Bluetooth-compatible Bluetooth-compatible Version: 5.3 Music Transmission Method: Bluetooth-compatible Transmission Range: 10 Meters Frequency Response Range: 20HZ-20KHZ Playing Time: 4H Charging Time: 1.5H Call Life: 4-6H Listening Time: 36H Speaker Impedance: 32 Ohms Signal-to-noise Ratio: Other Sensitivity: 105dB Speaker Unit: 8MM Charging Interface: Type-C Charging Compartment Battery Capacity: 200 mAh Headphone Battery Capacity: 30 mAh Supported Systems: for Android, Universal for Apple Systems Charging Method: Charging Cable Connection Waterproof: Yes Whether to Bring Wheat: Yes Volume Control: Yes Wearing Method: In-ear Type Supported Protocol: Bluetooth-compatible Protocol Applicable Scenarios: Any Noise Reduction: Smart Noise Reduction Features: Noise Reduction, HiFi Sound, Low Latency Size Details: L: 6.5cm/2.56", W: 5.9cm/2.32", H: 2.9cm/1.14" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 Pair of Headphones 1 x Headphone Compartment 1 x Data Cable 1 x User Manual