Bluetooth 5.3 Wireless Earphones With HIFI Stereo Sound Effect For Clear Calls And Long-lasting Battery Life Bluetooth Earphones Features: Clear Sound Quality Built in custom speaker ring and composite diaphragm make the human body clear and transparent, with different audio effects, providing a better music listening experience. The Bluetooth 5.3 chipAdopting 5.3 Bluetooth low-power technology, bringing audio-visual upgrades, more stable connections, and automatically activating low latency in game mode, making gaming more comfortable. Noise Reduction FunctionThe noise reduction technology has optimized the two noise reduction function compared to before, which can effectively reduce environmental noise interference and make listening to music clearer. Adopting intelligent noise reduction for calls, intelligently filtering out noise, making calls clearer Long Range BatteryEquipped with a 250mAh large capacity charging compartment, it can last longer and meet travel needs. It can also charge mobile phones and be used as an emergency power source in emergency situations. Power on automatic pairingWhen using, pick up the earphones and you can use them. The memory will automatically pair and connect. Fully applicable to IOS or Android devices, supporting Bluetooth devices such as smartphones and tablets. Product Description: Product Name: Bluetooth Earphones Product colors: white Bluetooth version: V5.3 Working distance: 10 meters Microphone sensitivity: -42 3dB Transmission frequency: 2.4GHz (2402-2.4080GHz) Horn resistance: 32 15% Microphone impedance: 2.2k Microphone sensitivity: -42 3dB Charging compartment battery: V3.7 300 mAh Earphone battery: 40 mAh Charging duration: 1.5h Call duration: 3h Product size:5.55.5cm/2.22.2in Product weight:50g/0.11lb Package size:1394cm/5.13.51.6in Package weight:100g/0.22lb Product List: 1 x instruction manual 1 x Bluetooth earphones 1 x charging cable