Miofive

Miofive S1 Ultra

Name: Miofive S1 Ultra
Brand: Miofive
Price: 135 USD
Availability: InStock

No rating shown: we have no owner rating for this camera from a source we can cite. Why

4K frontSupercapacitor2K+ rear5 GHz Wi-Fi25+ px/°

Only a couple of cameras in this catalog pair a 4K front camera with a 4K rear one at any price, and the S1 Ultra does it with the narrowest rear lens here by a wide margin: 112 degrees. That combination produces the single highest pixel density of any camera in this catalog - roughly 34 horizontal pixels per degree on the rear channel, against the 13 to 18 typical of 160-degree rear cameras. If your realistic worry is somebody rear-ending you and driving away, no other rear camera here comes close to reading that plate. The cost is peripheral vision: a 112-degree rear lens sees the lane behind you and very little of the lanes beside it, so a side-swipe at the rear quarter may simply not be in frame. The rear camera rotates through 360 degrees on its mount, which helps with awkward rear-window angles. Front is 4K at 30fps on a 140-degree f/1.8 lens, the rear runs at 24fps, and the supercapacitor is rated -4 to 158 degrees Fahrenheit.

Approx. price: ~$135
Hot car: Supercapacitor; Supercapacitor, rated to 158°F
Parking tier: Time-lapse / motion; Hardwire kit optional

Best for

Reading the plate of the car that rear-ends you and keeps going.

The description and the pros and cons above are written from published specifications, not from owner reports. Owner sentiment, where we have it, is in its own section below.

What the numbers mean here

The front camera records 3,840 horizontal pixels across a published 140-degree field of view, which is 27.4 pixels per degree — plate-legible at distance. The rear channel manages 34.3, so it resolves as finely as the front. How this is calculated, and what it does not tell you.

It runs on a supercapacitor rather than a lithium cell, so there is no battery to swell in a car parked in summer sun — the classic way a windshield-mounted camera dies. The maker publishes an operating range of -4°F to 158°F. Supercapacitors and heat.

Records continuously at a reduced frame rate, or only once motion or an impact is detected. You get context, at one to three frames a second. The hardwire kit is a separate purchase, which is the line item people forget when budgeting. What each parking mode records.

Specifications

Manufacturer-published figures, recorded from Miofive’s own product page and a specialist retailer’s spec table. Fields the maker does not publish are omitted rather than guessed.

Type: Dual-channel
Channels: 2
Front resolution: 2160p
Front frame rate: 30fps
Front field of view: 140° (as published)
Front aperture: f/1.8
Rear resolution: 2160p
Rear field of view: 112°
HDR: HDR
Power cell: Supercapacitor
Operating temperature: -4°F to 158°F
Parking modes: time-lapse, motion
Hardwire kit: optional
GPS: built-in
Wi-Fi: 5 GHz
LTE / cloud: None
Max storage: microSD
CPL filter: optional
Screen: 3-inch
Voice control: No
Form factor: wedge
Mount: adhesive
Release year: 2025

Features

4K front at 30fps and 4K rear at 24fps
112-degree rear lens - the narrowest here, and the highest pixel density in the catalog
Supercapacitor rated -4 to 158 degrees Fahrenheit
360-degree adjustable rear camera mount
3-inch IPS screen, dual-band Wi-Fi, Bluetooth 4.2, built-in GPS

Where it is strong

The rear channel resolves roughly 34 px per degree, more than double any other rear camera here
4K on both channels for well under half what the other dual-4K cameras cost
Supercapacitor with a 158 degree Fahrenheit ceiling
The rear camera rotates 360 degrees on its mount, which solves awkward hatchback and SUV glass angles
3-inch screen and a card in the box

Where it gives way

The 112-degree rear lens trades away peripheral coverage - a rear-quarter side-swipe can fall outside the frame entirely
Rear records at 24fps rather than 30, so fast lateral motion behind you smears more than the resolution suggests
Miofive publishes no sensor part numbers for either camera
Parking mode is time-lapse and motion only, with no buffered option

What owners say

We have not collected enough owner discussion about the Miofive S1 Ultra to write this section. We only summarise sentiment for cameras whose owners we have actually read, so this is left empty rather than filled in with something plausible. How we compare explains where the sentiment on other pages comes from.