Sony INZONE H9 II / Apple AirPods 4

Sony INZONE H9 II: WH-G910N · WHG910N/B, black

Apple AirPods 4: AirPods 4 (2024), the basic model without active noise cancellation; USB‑C charging case. The same-design AirPods 4 with Active Noise Cancellation and the AirPods Pro models are separate.

SpecificationSony INZONE H9 IIApple AirPods 4
Release year20252024
Release year2025 Sony—
DesignOver-ear, closed-back; adjustable suspension headband Sony—
WeightApproximately 260 g without microphone Sony—
Microphone weightApproximately 13 g including windscreen Sony—
MicrophoneDetachable boom; mute button and red indicator Sony—
Gaming connection2.4 GHz through USB-C receiver Sony—
Receiver modePC / OTHER switch Sony—
Bluetooth5.3; Class 1 Sony—
CodecsSBC, AAC; LC3 through LE Audio Sony—
Simultaneous connectionUSB receiver + Bluetooth phone Sony—
Analog connection3.5 mm cable; powered or passive operation Sony—
When the cable is insertedBluetooth and receiver-based wireless functions are disabled Sony—
Noise controlANC and ambient sound mode; unavailable passively SonyVent system for pressure equalisation; active noise cancellation only on the separately sold ANC model

At launch Apple offered two distinct models: AirPods 4 and AirPods 4 with Active Noise Cancellation. This model has an open design that does not seal the ear canal.

Apple
Game/chat balanceOnly with the receiver in PC mode Sony—
Volume controlPhysical volume dial during wireless use Sony—
PC softwareINZONE Hub; unavailable through a Bluetooth connection Sony—
Phone appSony Sound Connect through Bluetooth Sony—
ChargingUSB-C; full charge approximately 3.5 hours, condition dependent SonyCharging case with USB‑C port; USB‑C cable sold separately

Apple says the case is more than 10 percent smaller in volume than its predecessor. Charging with an Apple Watch charger or Qi-certified charger is specific to the ANC model.

Apple
Use while chargingSupported Sony—
BatteryBuilt-in rechargeable lithium-ion SonyUp to 5 hours listening per charge; up to 30 hours total with the case; 5 minutes in the case ≈ 1 hour listening

Apple measured these figures at 50% volume with Spatial Audio off.

Apple
Wired frequency range5 Hz–20 kHz with power off; not a wireless measurement Sony—
Impedance440 Ω powered / 21 Ω passive at 1 kHz Sony—
Operating temperature0–40 °C Sony—
Water protectionNot waterproof Sony—
Box contentsUSB-C receiver, USB-A–USB-C charging cable, analog cable, microphone and soft pouch Sony—
Type—Open-fit (no silicone tips) wireless earbuds; USB‑C charging case

This is the basic AirPods 4 without active noise cancellation. The identical-looking “AirPods 4 with Active Noise Cancellation” is a separate product.

Apple
Audio technology—Custom high‑excursion Apple driver, custom high dynamic range amplifier; Personalised Spatial Audio with dynamic head tracking; Adaptive EQ

Adaptive EQ tunes the sound to the fit in the ear. Spatial Audio needs supported content; the personal profile is created with an iPhone that has a TrueDepth camera.

Apple
Chip—H2 headphone chip

H2 enables Voice Isolation, Siri Interactions with head gestures and Personalised Spatial Audio.

Apple
Microphones and sensors—Dual beamforming microphones, inward‑facing microphone, optical in‑ear sensor, motion- and speech-detecting accelerometers, force sensor

The speech-detecting accelerometer helps detect when you are speaking; the optical sensor resumes playback when the bud is put in.

Apple
Controls—Press the stem: once to play/pause or answer, twice to skip forward or end a call, three times to skip back, press and hold for Siri; “Siri” voice activation; nod or shake your head to answer calls

Apple’s control list does not include volume adjustment on the stem.

Apple
Durability—IP54 dust, sweat and water resistance (earbuds and case)

According to Apple this is for non-water sports and exercise; resistance is not permanent and may decrease with wear. Do not charge when wet.

Apple
Connectivity—Bluetooth 5.3

It works as a Bluetooth headset with Android and other devices, but Apple says functions may be limited. Full features require current iOS, iPadOS, macOS, watchOS or tvOS.

Apple
Size and weight—Earbud: 30.2 × 18.3 × 18.1 mm, 4.3 g; case: 46.2 × 50.1 × 21.2 mm, 32.3 g Apple
Accessibility—Live Listen, headphone levels, Headphone Accommodations Apple