RayNeo Air 4 Pro vs XREAL One Pro

Neither of these has a battery or a camera in the frame. Plug either one into a phone, laptop or handheld that sends video over USB-C and it becomes a private big screen. The real difference is what that screen does when you look around.

The differences at a glance

Spec	RayNeo Air 4 Pro	XREAL One Pro
US price	$299 Standard Edition; $319 USB-C bundle	$549 sale; $649 regular
Head tracking	None; fixed picture	Native 3DoF on the X1 chip
Field of view	46 degrees	57 degrees
Screen size claim	201 inches; no distance given	Up to 171 inches at 4 meters; 310 inches in ultrawide
Panel	0.6-inch SeeYa micro-OLED; HueView 2.0 with HDR10	0.55-inch Sony micro-OLED; X Prism optics
Resolution	Full HD: 1920 × 1080 in 2D, 3840 × 1080 in 3D	1920 × 1080 per eye
Brightness	1,200 nits	700 nits perceived
Refresh	Up to 120Hz	60, 72, 90 or 120Hz
Weight	76 g	87 g without the cable
Speakers	Four, co-tuned by Bang and Olufsen; Whisper Mode	Two, Sound by Bose
Microphones	Not published	Four
Dimming	Not published	Three-level electrochromic
Fit	9-way adjustment; 3-position nose pads	M (57–66 mm IPD) or L (66–75 mm)
Camera	None	None built in; optional XREAL Eye
Power	From the host over USB-C; no battery	From the host over USB-C; no battery
Water	Not published	Not published

Tracking is what the extra money buys

One Pro’s X1 chip handles native 3DoF. The screen can stay anchored in space while you turn your head, follow you around, or stretch into an ultrawide mode, all without a Beam or an extra app. XREAL describes anchor mode in 6DoF terms, but One Pro has no depth camera mapping the room.

Air 4 Pro doesn’t track at all. RayNeo says the picture is fixed and the glasses don’t support 3DoF; Air 4 Pro’s “3D” means stereoscopic video and 2D-to-3D conversion. If you think you’ll want an anchored screen later, buy One Pro now, because no RayNeo setting adds it.

Picture: HDR10 and brightness against a wider view

Air 4 Pro’s HueView 2.0 panel is a 0.6-inch SeeYa micro-OLED in Full HD, with native HDR10 when your device, its software, the app and the file all support it. When the source is SDR, RayNeo’s Vision 4000 upscales it toward HDR in real time. RayNeo rates it at 1,200 nits with 200,000:1 contrast, 98% of DCI-P3 and 145% of sRGB, and lists six color modes and 20 brightness steps. RayNeo’s “world’s first” claim is marketing, not a ranking.

One Pro’s 0.55-inch Sony micro-OLED shows 1920 × 1080 per eye through XREAL’s X Prism, across 57 degrees against Air 4 Pro’s 46. XREAL quotes 700 nits of perceived brightness on its store comparison, which isn’t the same measure as RayNeo’s 1,200, and lists delta E under 3 and a 3-millisecond motion-to-photon figure from its own lab. Its electrochromic lenses tint in three levels; on Air 4 Pro, the panel’s own brightness is the control.

Both reach 120Hz. One Pro also offers 60, 72 and 90Hz.

Sound, weight and fit

Air 4 Pro has four speakers co-tuned by Bang and Olufsen, plus a Whisper Mode to keep sound from leaking, and RayNeo says its optional Sound Tube, sold separately, adds 15 decibels. One Pro has two speakers with Sound by Bose and four microphones, and XREAL pitches stereo recording and noise reduction on calls.

Air 4 Pro weighs 76 grams, eleven fewer than One Pro’s 87 (without its cable).

Fit works differently. Air 4 Pro adjusts, with a 9-way flexible fit and three nose-pad positions. One Pro comes in two sizes. On XREAL’s US store, M covers interpupillary distances of 57 to 66 mm (center 63) and L covers 66 to 75 mm (center 69); near 66, pick the size whose center is closer to your measurement. XREAL’s EU FAQ gives different figures, an average of 64.5 mm and an optimal range of 59.5 to 70.5 mm, so use the chart from the store you’re buying from.

For prescriptions, RayNeo works with Lensology inserts but gives no range in its US FAQ. XREAL points you to partner prescription lenses and argues that real vision correction doesn’t come from a dial.

Connections and the camera question

Both stay dark until a USB-C device that outputs DisplayPort wakes them. RayNeo lists phones, computers, Steam Deck, Switch and PlayStation, with an HDMI adapter or JoyDock for some consoles, and basic viewing needs no app. XREAL’s list is long and follows the same DisplayPort rule; Switch needs XREAL’s own USB-C hub.

Neither has a built-in camera. XREAL sells the optional XREAL Eye, a 1.5-gram add-on camera of up to 12 megapixels, and its developer docs list the One-series RGB camera as a detachable accessory. XREAL’s fine print on the Eye mentions its Beam Pro, so check what the Eye needs before you buy one. Air 4 Pro has no camera option, so its spatial-video support is for playback only.

What they cost

Air 4 Pro’s Standard Edition is $299, or $319 in the USB-C bundle; RayNeo also sells a Batman edition as a separate model. XREAL’s US store showed One Pro at $549 on sale and $649 regular, but a review blurb on the same page says the price was cut permanently from $649 to $599, which is also what launch press reported. Go by the price in your cart, and check that your size is in stock: both M and L have shown as sold out.

If neither fits

If you want a camera and an assistant in ordinary-looking glasses, Ray-Ban Meta is the better fit. And if you want something that works with nothing plugged in, on a plane or anywhere else, neither of these will.