Volkano Pebble Series Bluetooth Headphones - Dark Grey

The Volkano Pebble Series Bluetooth Headphones (VK-2023-DG) are wireless, dark grey on-ear headphones featuring Bluetooth 5.0, 40mm drivers, and up to 40 hours of playtime. They offer a 10m range, 32-ohm impedance, and a 2-3 hour charge time, designed for comfortable, portable listening with built-in microphone functionality. 

Key Technical Specifications (VK-2023-DG):

• Bluetooth Version: 5.0
• Operating Distance: 10 meters
• Driver Size: 40 mm
• Playback Time: Up to 40 hours
• Battery: 400mAh or 600mAh (varies by listing)
• Charging Time: 2 - 3 hours
• Frequency Range: 20 Hz - 20 kHz
• Impedance: 32 Ohm
• Sensitivity: 100$\pm$3dB
• Input: 5V DC
• Features: Built-in microphone, foldable design, voice command support 

Note: Some listings indicate a 400mAh battery while others suggest 600mAh;, but most agree on ~40 hours of battery life and 2-3 hours for charging.