The Koss BT221i headphones offer a wireless in-ear design, featuring a built-in microphone for calls and a pivoting ear-clip for a snug fit. Designed in black, these headphones provide over 6 hours of battery life and are sweat-resistant, making them suitable for active use.

• Bluetooth 5.2 connectivity
• Built-in rechargeable lithium-ion battery
• Frequency range of 50-18k Hz
• Pivoting ear-clip for a secure fit
• Cable management clip for convenience

Specifications

• Microphone: Yes

Design

• Colour of product: Black

Technical details

• Headphones connection type: Bluetooth
• Noise canceling: No
• Producer product family: Headphones
• Producer product name: BT221i
• Wearing style: In-ear
• Wireless: Yes
• Connector type: Bluetooth
• Net weight: 0.019 kg
• Other features: Pivoting ear-clip creates the perfect fit and seal; Sweat Resistant; Cable Management Clip
• Warranty: 24 month(s)
• Wireless connection: Yes

Battery

• Battery type: Built-in rechargeable lithium-ion battery

Other features

• Frequency range: 50-18k Hz

Ports & interfaces

• Bluetooth version: 5.2
• USB charging port: No

Power

• Battery life: 6+ h