"SONY Fully Wireless Earphones WF-1000XM4 Black" SONY Model Number: WF-1000XM4(B) Reduces noise reaching the ears across a wide range from low to high frequencies, delivering even greater silence than the WF-1000XM3. You can now feel more silence in noisy environments such as airplanes and buses, as well as in environments with many people, such as in the city or cafes. *In the fully wireless noise-canceling headphone market. April 2021... Series Name: 1000X (Sony) Bluetooth Support: Yes Noise Canceling Function: Yes Wireless Function: Yes Wearing Type: In-ear type Wearing Method: For both ears Representative Color: Black Microphone: Yes Folding Function: Not applicable Driver Size: 6.0 mm High-Resolution Audio Support: Yes Plug Shape: No plug Release Date: 2021/06/25 Waterproof/Splashproof Function: Yes Driving Method (Headphones/Earphones): Dynamic type Headphone Structure: Sealed HP Remote Control: Yes NFC Support: No Supported Codecs: SBC; AAC; LDAC #SONY #WF-1000XM4(B) #Smartphones/Home Appliances/Cameras #Audio Equipment #Headphones/Earphones Included Accessories USB Type-C (TM) Cable Ear tips The battery charges to 100%, but it runs out of charge quickly, so it is being sold as junk. Please understand and purchase. Series: WF Series Model: WF-1000XM4