Anker Soundcore Liberty 4 NC Black Used for about 2 months There are some minor scratches on the main unit, but there are no issues with the operation. All accessories included Shipped after cleaning and disinfection Other features: Noise canceling Truly wireless earphones Soundcore Liberty 4 NC A3947N11 Black Brand: Anker Soundcore (Anker) Wearing style: Separate left and right, completely independent Earphone/Headphone type: Canal type Color: Black Wireless/Wired connection: Wireless Earphone/Headphone features: Noise canceling, Hi-Res, Microphone, Ambient sound mode, Sound quality adjustment, Waterproof, splashproof, Remote control Wireless standard: Bluetooth Bluetooth codec: LDAC, AAC, SBC IP standard (waterproof standard): IPX4 Drive system: Dynamic type Driver size (mm): 11.0 mm Charging port: USB Type-C, Qi standard Charging time: 3.5 hours Weight (g): 10.0 g