Key Specifications of the Apple AirPods 4:

• Audio Technology: Custom high-excursion Apple driver, Custom high dynamic range amplifier, Voice Isolation, Adaptive EQ, Personalized Spatial Audio with dynamic head tracking.
• Chip: Apple H2 headphone chip
• Controls: Press once to play/pause/answer calls, Press twice to skip forward/end calls, Press three times to skip back, Press and hold for Siri, “Hey Siri” or “Siri” voice activation, Siri Interactions (nod/shake head).
• Dust, Sweat, and Water Resistant: IP54
• Charging Case: Works with USB-C connector, Apple Watch charger, or Qi-certified chargers.
• Battery:
  • AirPods: Up to 5 hours of listening time on a single charge.
  • With Charging Case: Up to 30 hours of listening time.
• Connectivity: Bluetooth 5.3 wireless technology.
• Sensors: Dual beamforming microphones, Inward-facing microphone, Optical in-ear sensor, Motion-detecting accelerometer, Speech-detecting accelerometer, Force sensor.
• Dimensions & Weight (Each AirPod): 30.2 mm (Height), 18.3 mm (Width), 18.1 mm (Depth), 4.3 grams (Weight).