H21 Drone Optical Flow Constant Height Hover

$37.36

H21 Camera Drone — Stable, Easy Flying

🇺🇸 Ships Fast from the USA

✔ Stable hover • ✔ Easy-to-use controls • ✔ US stock

 

US warehouse shipping—delivery in 5–7 business days

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Perfect beginner drone with HD camera and altitude hold.
Order now, fly this weekend!

FAST US DELIVERY vs 15-25 days from overseas
Great gift—arrives quickly for any occasion

Designed for Stable, Easy Flying

The H21 drone is built to be simple, steady, and enjoyable to fly, even if you’ve never owned a drone before. It focuses on controlled flight, ease of use, and reliable performance, rather than complex professional features.


Optical Flow Constant Height Hover

The H21 uses optical flow positioning to help maintain a steady hover and consistent flight height.

  • A downward-facing sensor monitors the ground below

  • The drone automatically adjusts to reduce drifting

  • Helps maintain stable low-altitude flight

Why it matters:
This makes the drone easier to control, especially indoors or in calm outdoor conditions, and reduces the need for constant manual corrections.


Dual Camera System (Front & Downward)

The H21 features a front-facing camera for aerial shots and a downward-facing camera for ground perspective views.

  • Capture photos and video from different angles

  • Useful for casual aerial photography

  • Easy camera switching via the controller

Note: Designed for recreational use rather than professional cinematography.


Simple, Intuitive Controls

The controller layout is designed to be straightforward and responsive.

  • Clear button placement

  • Easy take-off and landing

  • Suitable for beginners and casual pilots

This allows you to focus on flying rather than learning complicated controls.


Assisted Take-Off and Landing

The H21 supports one-button take-off and landing, helping the drone lift smoothly and land steadily.

  • Reduces accidental tipping

  • Helps protect the drone during landing

  • Especially useful for first-time users


Stable Low-Altitude Flight

While the H21 does not rely on GPS, its flight systems are designed to provide:

  • Smooth low-altitude control

  • Predictable handling

  • Reduced sudden movements

Best used in:

  • Open indoor areas

  • Gardens and yards

  • Calm outdoor conditions


Rechargeable Battery System

The H21 is powered by a rechargeable lithium battery designed for practical flight sessions.

  • Quick battery swaps

  • Suitable flight time for casual use

  • Easy USB charging

(Exact flight time may vary depending on conditions and use.)


Foldable, Portable Design

The drone folds down for compact storage and transport.

  • Easy to store at home

  • Convenient to carry when travelling

  • Protective when not in use

Clarification:

This drone is designed for recreational use and performs best in calm conditions at lower altitudes. Optical flow enhances stability but does not replace GPS.

 

⭐⭐⭐⭐⭐ “Perfect for aerial photography of my property”

Retired last year and wanted a hobby drone for taking photos around my ranch. This H21 is exactly what I needed – stable flight, decent camera for the price, and easy enough to learn at my age. The optical flow keeps it steady even in light wind. Been flying it weekly for two months now. Battery life is adequate. Would recommend to fellow retirees looking for an affordable starter drone.

— Robert H., Texas, Verified Purchase, October 2025

⭐⭐⭐⭐ “Great gift for staying active outdoors”

Bought this after my doctor said I need more outdoor activities. Flying drones gets me out of the house and walking around the neighborhood parks. The controls are straightforward – no complicated tech stuff. My only gripe is I should have ordered extra batteries right away. Flight time goes quick when you’re having fun. Shipping took about a week to Florida.

— Bill T., Florida, Verified Purchase, November 2025

⭐⭐⭐⭐⭐ “Finally mastered drone flying at 62!”

Always wanted to try drones but thought I was too old to learn. This one proved me wrong. The altitude hold and optical flow make it very forgiving for beginners. Took it to my grandson’s soccer game and got some great overhead shots. The camera isn’t professional grade but good enough for sharing on Facebook. Crashed it twice – still works fine. Well built for the price.

— Michael S., Ohio, Verified Purchase, December 2025

 

10 in stock

Optical Flow Constant Height Hover (What It Means & Why It Matters)

The H21 drone uses optical flow positioning to maintain a steady hover and stable flight height automatically.

This system works by:

  • Using a downward-facing sensor

  • Continuously reading the ground below

  • Making automatic micro-adjustments in real time

The result is a drone that:

  • Holds its position more accurately

  • Maintains a consistent altitude

  • Feels noticeably easier and calmer to fly


Why Optical Flow Is Important (Especially for Beginners)

Without optical flow, drones can:

  • Drift sideways

  • Slowly rise or drop

  • Feel unstable indoors or in calm outdoor conditions

With Optical Flow Constant Height Hover, the H21:

  • Stays where you place it

  • Reduces unwanted movement

  • Lets you focus on flying and filming instead of correcting the drone

This makes it ideal for:

  • First-time drone users

  • Casual hobby flying

  • Smooth aerial photos and video

  • Indoor or low-altitude outdoor flight


What You’ll Notice When Flying the H21

  • Smooth, controlled hovering

  • Stable low-altitude flight

  • Easier take-offs and landings

  • Less drifting when hands are off the controls

  • More usable footage for photos and video

You don’t need advanced skills—the drone assists you automatically.

 

One-click lift and takeoff

Remote control
Optical flow constant
Height hover
Three-speed adjustment

H21 Drone Optical Flow Constant Height Hover
$37.36
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