Feature: 1. 1. Hands‑free calling and high‑quality sound: The Bluetooth earphone adopts Bluetooth 5.3 chip technology, which provides clearer sound and a stable connection, allowing you to hear clear calls, just like you are communicating with others face to face. Don t worry about interruptions when posting music and calls. 2. 2. LED charging case and 180 hours standby time: Built‑in 500mAh battery LED charging case, Bluetooth earbuds with microphone can be fully charged within 1 hour. The earphones are used with the charging case and can also provide 7‑8 charges for the wireless earphones. 3. 3. Comfortable in‑ear design: The in‑ear design can fit the left/right ear more comfortably. The ear hook can be rotated 180° vertically and 360° horizontally, flexible ear hook, is comfortable to wear. It s light and comfortable enough to wear for hours. 4. 4. Mute function and active voice: The mobile phone Bluetooth headset supports voice assistants. With a built‑in microphone, it also allows you to answer or reject incoming calls and mute the Bluetooth headset. Easily mute/unmute by pressing the mute button. 5. 5. Two charging methods and connect two devices: You can charge your Bluetooth earphones with a type‑c charging cable or charging case. It can also connect 2 devices at the same time, keeping your life and work separately. It is ideal for office and driving environments. Specification: 1. Headphone parameters: Bluetooth version: V5.3+EDR Wireless frequency: 2.4GHZ Supported protocols: A2DP.AVRCP.HEP.HSP.EDR Transmission distance: 10 meters Battery capacity: 60mAh Charging voltage/current: 5V/1A Play/talk time: about 10 hours Charging time: about 1 hour Standby time: 180 hours Speaker impedance: 13Ω,±10% Microphone sensitivity: -42Db Working temperature: -10-50℃ Single headset weight: 12.5G Single earphone box size: 125*74*18MM Weight of a single headset package: 42G 2. Charging case parameters: Input voltage/current: 5V/1A Battery capacity: 500mAh Weight of complete set with charging compartment: 153g Headphone + charging compartment net weight: 78g. Package List: 1*Headphone 1*Charging Compartment 1*Charging Cable 1*Instruction 2*Ear Caps Note: Due to the lighting effects and shooting angles, there is a color difference in the product, please understand.Due to manual measurement, there is a tolerance in the product size.