What They Have in Common
Both rangefinders hit the basics well: 6x magnification, slope mode with a legal-play toggle, vibration lock to confirm the pin, and an LCD display. You're getting ±1 yard or better from both, which is accurate enough for real on-course decisions. Either one will tell you it's 157 yards to the flag.
Where They Differ
Accuracy and Display
Here's where the Mileseey pulls away first. Callaway claims ±1 yard accuracy, which is the industry standard floor. Mileseey claims ±0.4 yards — more than twice as precise on paper. Whether you'll actually feel that difference on a 140-yard approach is debatable, but it's not nothing. If you're stuck between clubs, the difference between 143 and 144 yards might matter more than you'd think.
The display is also different in a way that gets undersold. The CSi Pro uses a standard LCD. The PF260 Tour uses a transmissive LCD, which is designed to use ambient light rather than fight it. Practically speaking, this means better visibility in direct sun — the situation where most rangefinder displays go from clear to miserable. It's not a small thing.
Battery and Build
The Mileseey uses a removable rechargeable battery rated for 2–3 rounds per charge. That's a real-world number you can plan around. Callaway doesn't publish battery life for the CSi Pro, which tells you something — probably that it runs on a CR2 or similar disposable, since those specs tend to disappear when the answer isn't flattering. (CR2s are fine, for the record — they're everywhere — but a rechargeable is cleaner.)
The Mileseey also carries an IP54 rating, which is a defined waterproofing standard: dust-protected, splash-resistant from any direction. The CSi Pro is listed as "water-resistant," which could mean anything. If you play in the Pacific Northwest or early-morning dew is a regular thing for your group, IP54 is the more trustworthy claim.
The Magnet and the Warranty
The PF260 Tour has a built-in magnet for attaching to a cart rail. It sounds like a small thing until you've used one and then gone back to wrestling a clip or setting the rangefinder on the seat. Callaway doesn't list a magnet on the CSi Pro.
The warranty gap is harder to ignore. Mileseey offers five years. Callaway offers two. That's not a minor footnote — a rangefinder in regular use should last five years, and knowing you're covered for that full window matters. Callaway's two-year warranty is fine, but it's not five.
The CSi Feature
The one thing the Callaway has that the Mileseey doesn't is its CSi club-selection feature. The idea is that the rangefinder factors in your typical distances to suggest which club to hit. It's interesting in concept. Whether it's useful in practice is harder to say — if your distances are already dialed in, it's telling you what you already know. If they're not, a rangefinder probably isn't the tool for that problem. I'd call this a feature to try at the store, not one to pay a $30 premium for.
Who Should Buy Which
Get the Callaway CSi Pro if:
- You're already in the Callaway ecosystem and want everything on one brand
- You find the CSi club-selection feature genuinely useful after trying it in person — it's the one real differentiator here
- You prefer disposable batteries because you travel and don't want to manage charging
Get the Mileseey PF260 Tour if:
- You're the golfer who reaches for the rangefinder on every shot and wants the most accurate number you can get — ±0.4 yards versus ±1 yard is the spec that matters most in that habit
- You play early mornings when the display needs to work in variable light, and a transmissive LCD actually earns its keep
- You want a rangefinder that sticks to the cart rail and stays out of your way between shots — the built-in magnet is genuinely useful
- You want five years of warranty coverage and don't want to think about it again
The Bottom Line
The Mileseey PF260 Tour beats the Callaway CSi Pro on accuracy, waterproofing, display quality, battery transparency, the built-in magnet, and warranty length — and it does it for $30 less. The CSi club-selection feature is the only thing in the Callaway's corner, and it's not a strong enough argument to overcome the rest. These aren't close on the merits.
Get the Mileseey PF260 Tour.