Overview
- Samsung reworked the hardware with a flat metal blade, engraved pinch area and a horizontal transparent case, citing hundreds of millions of ear data points and 10,000+ simulations to improve comfort and reliability.
- Both models support 24‑bit/96kHz audio, while the Pro adds a wider woofer in a two‑way driver for cleaner bass and richer treble.
- Noise control gets a boost with Enhanced/Adaptive ANC designed to cut transit noise; the Pro can auto‑raise ambient sound for conversations and includes Siren Detect for safety alerts.
- New interactions include head‑gesture call controls on the Pro and hands‑free access to Bixby plus Google Gemini and Perplexity, with on‑ear pinch available for features like Interpreter.
- Battery life is rated around 5–6 hours per charge with ANC on and up to roughly 24–30 hours with the case; durability is IP54 on Buds 4 and IP57 on Buds 4 Pro, with Black/White finishes and a Pink Gold Pro color exclusive to Samsung online; Amazon is offering a $30 gift card with Buds 4 Pro preorders.