SKU: 40299902869

Hummingbird V4 with SmartMax 400mw VTX ELRS2.4G AIO Flight Controller

Sale price$30.53 Regular price$33.92
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  • USA
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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30

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For Your Every Summer RSVP, with Code: SUMMER15

Description

Hummingbird V4 with SmartMax 400mw VTX ELRS2.4G AIO Flight ControllerHummingbird V4 ELRS 2. 4G AIO Flight Controller Let's be honest. Your current whoop is probably suffering from the holy trinity of problems: a dodgy RC link, a VTX that cooks itself on the starting grid, and tragic voltage sag. The Hummingbird V4 AIO is the cure. It combines a rock solid SPI ELRS 2. 4G receiver with a clever 400mW SmartMax VTX and a proper solid pin power connector, creating the most potent 1S brain you can cram into a 65mm frame. Why

Hummingbird V4 ELRS 2.4G AIO Flight Controller

Let's be honest. Your current whoop is probably suffering from the holy trinity of problems: a dodgy RC link, a VTX that cooks itself on the starting grid, and tragic voltage sag. The Hummingbird V4 AIO is the cure. It combines a rock-solid SPI ELRS 2.4G receiver with a clever 400mW SmartMax VTX and a proper solid-pin power connector, creating the most potent 1S brain you can cram into a 65mm frame.

Why You Want It

Because this isn't just an upgrade; it's practically cheating. The SmartMax VTX stays cool while you're disarmed, then intelligently ramps up to 400mW the moment you arm, giving you incredible penetration without melting your canopy. The 12A Bluejay ESCs and BMI270 gyro provide that buttery-smooth, locked-in feel that stock whoops can only dream of. It's the unfair advantage you need to dominate your local whoop race or just fly with impunity around the house while it's chucking it down outside.

Specifications

  • MCU: STM32F411 (The processing power to handle your ambition)
  • Gyro: BMI270 (The clean, reliable signal you need for that "flying on rails" feeling)
  • VTX: Up to 400mW with SmartMax (Stays cool when you're waiting, blasts through walls when you're flying)
  • ESC: 12A BLHeli_S with Bluejay 0.19.2 (48kHz of smooth, RPM-filtered goodness)
  • Receiver: SPI ExpressLRS 2.4G (The gold standard link, built right in. Update your firmware!)
  • Power Connector: PH2.0 Solid Pin (The only connector that doesn't sag more than your will to live in January)
  • Mounting: 25.5×25.5mm (The standard for tiny whoop frames)
  • Weight: 4.57g (Lighter than your collection of broken props and shattered dreams)
  • Input Voltage: 1S Only (Don't even think about it.)

What's in the Box*

  • 1x Hummingbird V4 AIO Flight Controller
  • 0x Excuses for losing your next race

Disclaimer

*We guarantee this board is in the box. If you manage to make it release magic smoke, that's a feature you've unlocked yourself.

Still Here?

You're still reading? You've already mentally installed this in your favourite whoop frame, haven't you? You're picturing the clean video signal and the lightning-fast response. This high-performance whoop AIO is the upgrade you know you need. Stop dreaming and start building. Your race is waiting.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40299902869

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Tyler W
Fort Morgan, US
★★★★★ 4
Amazing socks but false advertising. They changed them.
Size: Large, Color: Black (6-pairs)
Okay well I have 4 stars because these are the best socks ever, infact, I threw out all my other socks and switched to just these. No show and they never slip. THE PROBLEM NOW, all the pairs I ordered before had a white symbol, and every time I buy more they have the grey and they are not as low show as my others… I wanted to simplify life and have all the same kind, no matching of colors or slightly different shape, but 4 times now I’ve ordered white symbol and gotten thicker longer ones with gray symbols. I’m considering switching all of my socks to the gray…. But the white symbol ones are way better, they don’t show with hey dudes on and gray symbol ones do now. I’m at a loss. Can someone tell me where to buy 100 pairs of white symbol so I never need to buy another sock again in my life?
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Reviewed in the United States on January 24, 2025
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lovecolor1
Whiting, US
★★★★★ 5
My favorite
Size: Medium, Color: Opal Blue/White/Cruise Blue (3-pairs)
My favorite socks, too bad under armour discontinued the cotton blend fabric and went to 100% polyester 😠
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Reviewed in the United States on March 16, 2026
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Natalie Williams
San Leandro, US
★★★★★ 5
Comfortable
Size: 6-10, Color: Halo Gray/Assorted
These are my favorite socks!
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Reviewed in the United States on September 22, 2025
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The bookish health nut
Los Angeles, US
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer: Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free. No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them. Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day. Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions. Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently. Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game. If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks. 5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
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DLynn
Natrona Heights, US
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks. Comfortable Fit: They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching. Great for Everyday Wear: Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky. Durable & Long-Lasting: These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly. Reliable Under Armour Quality: You can tell they’re well made. Consistent quality that matches what you expect from Under Armour. Overall Impression: When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
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Reviewed in the United States on December 30, 2025

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