Samsung Galaxy Buds4 Pro / Sony INZONE H9 II

Samsung Galaxy Buds4 Pro: Galaxy Buds4 Pro (SM-R640); White, Black and Pink Gold. The non-Pro Galaxy Buds4 and the Buds3 Pro are separate models.

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

SpecificationSamsung Galaxy Buds4 ProSony INZONE H9 II
Release year20262025
Drivers2-way; Super Wide woofer + tweeter

Separate drivers for bass and treble aim for better separation than a single driver covering both.

Samsung		—
Sound24-bit / 96 kHz Hi-Fi sound; 360 Audio with head tracking; Adaptive EQ 2.0 Samsung—
Noise controlAdaptive Active Noise Cancellation; Ambient Sound; Adaptive Noise Control; Voice Detect

Voice Detect lowers the music and lets in ambient sound when you start talking.

Samsung		ANC and ambient sound mode; unavailable passively Sony
Microphones and calls3 mics (2 outer high-SNR + 1 inner) and VPU; Super Wideband Call (16 kHz); DNN noise reduction Samsung—
BluetoothBluetooth 6.1 (LE Audio ready); Auracast; Auto Switch

Auto Switch moves the connection between Galaxy devices on the same Samsung account; Auracast lets several headsets join one broadcast.

Samsung		5.3; Class 1 Sony
Battery capacityEarbud 61 mAh; case 530 mAh Samsung—
Playback time6 hours with ANC (26 with case), 7 hours without (30 with case) Samsung—
Talk time4.5 hours with ANC (20 with case), 5 hours without (22 with case) Samsung—
ControlsTouch and swipe; head gestures; voice commands; Gemini and Bixby

Head gestures let you accept or reject a call by nodding or shaking your head.

Samsung		—
DurabilityIP57; 0.9 m (3 ft) of water for 30 minutes

IP57 limits dust ingress and survives brief immersion; the case is not stated to have the same rating.

Samsung		—
SizeEarbud 18.1 × 19.6 × 30.9 mm; case 51 × 51 × 28.3 mm Samsung—
CompatibilityOne UI 8.0 or later via phone settings; Android 11 or later via Galaxy Wearable; Bluetooth only on iOS; Windows 10 PCs; Samsung TVs from 2022

Because there is no iPhone app, features such as EQ and ANC settings are not available on iOS.

Samsung		—
ColoursWhite, Black, Pink Gold Samsung—
Release year—2025 Sony
Design—Over-ear, closed-back; adjustable suspension headband Sony
Weight—Approximately 260 g without microphone Sony
Microphone weight—Approximately 13 g including windscreen Sony
Microphone—Detachable boom; mute button and red indicator Sony
Gaming connection—2.4 GHz through USB-C receiver Sony
Receiver mode—PC / OTHER switch Sony
Codecs—SBC, AAC; LC3 through LE Audio Sony
Simultaneous connection—USB receiver + Bluetooth phone Sony
Analog connection—3.5 mm cable; powered or passive operation Sony
When the cable is inserted—Bluetooth and receiver-based wireless functions are disabled Sony
Game/chat balance—Only with the receiver in PC mode Sony
Volume control—Physical volume dial during wireless use Sony
PC software—INZONE Hub; unavailable through a Bluetooth connection Sony
Phone app—Sony Sound Connect through Bluetooth Sony
Charging—USB-C; full charge approximately 3.5 hours, condition dependent Sony
Use while charging—Supported Sony
Battery—Built-in rechargeable lithium-ion Sony
Wired frequency range—5 Hz–20 kHz with power off; not a wireless measurement Sony
Impedance—440 Ω powered / 21 Ω passive at 1 kHz Sony
Operating temperature—0–40 °C Sony
Water protection—Not waterproof Sony
Box contents—USB-C receiver, USB-A–USB-C charging cable, analog cable, microphone and soft pouch Sony