M-278 FB headphones/headset Wireless Head-band Music Bluetooth Black

Depth: 167 mm Weight: 240 g Height: 193 mm Width: 80 mm Wearing style: Head-band Product colour: Black Recommended usage: Music Product type: Headphones Music playback: Yes Package depth: 210 mm Package weight: 420 g Package type: Box Package height: 220 mm Quantity: 1 3.5 mm connector: Yes USB connectivity: Yes Bluetooth: Yes Connectivity technology: Wireless Bluetooth version: 5.0 Continuous audio playback time: 40 h Battery type: Built-in battery Battery capacity: 420 mAh Input voltage (earpieces): 3.7 V Impedance: 32 O Headphone frequency: 20 - 20000 Hz Magnet type: NdFeB Headphone sensitivity: 98 dB Charging time: 180 min