ATH-CKS50TW truly wireless headphones combine advanced acoustic technology for stunning bass with a comfortable and secure fit, while a high-capacity battery provides up to 20 hours of powerful, continuous audio (up to 50 hours with the charging case). The newly developed large-diameter drivers (9mm Solid Bass HD TWS drivers) deliver deep bass while the CKS50TW shape provides a snug fit – an important factor for truly wireless headphones as the airtight fit prevents the bass from escaping. ATH-CKS50TW wireless earbuds are designed for reliable, stress-free operation. The left button adjusts the volume and switches between hear-through and noise-cancelling functions, while the right button lets you easily start/stop playback, skip between songs, or enable quick hear-through. The splash-proof design keeps your earbuds dry in sudden rain showers or when exercising.Original Colour by Producer: BlackMicrophone: YesBattery Type: IntegratedActive noise cancellation: YesSensitivity: 110 dBBattery Operation: YesMade in: VietnamColour: BlackUK/EU Power supply included: NoPower Supply: USB-C;Charging caseType-A Connector: USB-CТype: True Wireless In-EarConstruction Method: ClosedBattery Detail: Li-IonPackage Contents: Charge Case;Earphone Tips;USB-C Charging CablePlay Time (hours): 20.0Impedance (Ohm): 20.0Sensitivity (dB): 110.0Speaker Type: DynamicWeight: 76 gSpecial Features: 360° Reality Audio;MultipairFrequency Range: 5 Hz – 20 kHzImpedance: 20 OhmBluetooth Version: Bluetooth 5.2Weight (g): 76.0Water Resistance: IPX4.