✅ Key Specifications

• Model / Item Code: HDT682
• Type: Over‑ear wireless headphone
• Bluetooth Version: Bluetooth 5.4
• Speaker Driver Size: 40 mm
• Frequency Response: 20 Hz – 20,000 Hz
• Wireless Range: Up to 10 meters
• Impedance: ~32 Ω (retailer listings sometimes show “320Ω ±15%”, likely a formatting error common on listings)

🔋 Battery & Charging

One of the biggest strengths of the B022 Plus is battery life:

• Battery Capacity: 800 mAh
• Play Time: Up to 90 hours
• Talk Time: Over 90 hours
• Standby Time: Up to 200–220 hours
• Charging Time: Approx. 2 hours
• Charging Port: USB (varies by batch; typically Micro‑USB on most units)

🔌 Connectivity & Modes

The B022 Plus supports multiple input modes, making it very flexible:

• ✅ Bluetooth (phones, tablets, laptops, smart TVs)
• ✅ AUX (3.5 mm wired mode)
• ✅ TF / Micro‑SD card playback
• ✅ Built‑in microphone for calls
• ✅ Voice prompts (English & Chinese)

🎙️ Controls & Comfort

• On‑ear physical buttons for volume, play/pause, mode switching
• Adjustable headband
• Cushioned ear cups suitable for long listening sessions
• Weight: approx. 200–205 g, making it lightweight for an over‑ear design