Koss CS340BT QZ Wireless Headset Dual Pack, Black

The Koss CS340BT QZ is a dual-pack of on-ear wireless headsets designed for communication and media playback. It utilizes Bluetooth 5.0 to establish a stable connection with compatible devices. The closed-back, on-ear design provides passive sound isolation, supporting an audio frequency response of 20 Hz to 20,000 Hz. With an impedance of 36 Ω, the headset is engineered for standard mobile and computer audio outputs. This configuration is suitable for environments requiring two users, such as collaborative office or home-office setups.

This model incorporates Active Noise Cancellation (ANC) to reduce consistent low-frequency background noise. For voice communication, it features a detachable and foldable boom microphone that can be muted directly. The internal battery provides up to 30 hours of playback time, which is reduced to approximately 22 hours when ANC is active. Users can manage calls, volume, and music through integrated on-board controls, and the headset recharges via a standard USB-C port.

• Type & fit: On-ear headset with headband
• Connectivity: Wireless via Bluetooth 5.0
• Acoustic system: Closed-back design
• Noise control: Active Noise Cancellation
• Microphone: Detachable and foldable boom arm with mute function
• Battery life: Up to 30 hours playback (22 hours with ANC)
• Charging: Recharges using a USB-C port
• Controls: On-board buttons for calls, volume, and music
• In the box: Two headsets and a USB-C charging cable