Product Features:

• Driver size: 12 mm/ 0.47" Dynamic driver
• Earbuds resistance factor: IP54
• Bluetooth version: 5.3
• Earbud battery type: Lithium-ion battery (55mAh/ 3.85V)
• Charging case battery type: Lithium-ion battery (545mAh/ 3.85V)
• Music playtime with BT on and ANC on: Up to 8 hrs
• Talk time with ANC off: Up to 5 hrs
• Talk time with ANC on: Up to 4.5 hrs
• Bluetooth transmitter frequency range: 2.4 GHz - 2.4835 GHz