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Product Overview

Shooting clear, stable underwater footage with your DJI Osmo Action 3, 4 or 5 is simple and secure with the TELESIN 45M Waterproof Case. Built for real-world water activities and deep-sea exploration, this durable diving housing delivers solid waterproof protection while preserving your camera’s original shooting quality. Most basic waterproof shells limit your creativity with blurry optics and weak sealing. This TELESIN housing is tailored for underwater content creators, water sports lovers and outdoor travelers, balancing reliable safety, true-to-life colors and easy operation. You can now focus on capturing amazing underwater scenes, without stressing over camera damage or foggy, low-quality clips.

Who This Waterproof Case Is For

This waterproof housing fits all DJI Osmo Action 3, Action 4 and Action 5 users perfectly. It works great for snorkeling, surfing, open-water diving and outdoor travel shooting. Whether you’re filming casual seaside moments or professional deep-water videos, this heavy-duty case offers far more dependable protection than standard budget camera accessories.

Core Product Advantages at a Glance

This TELESIN waterproof housing covers every essential need for underwater filming. It supports up to 45-meter deep-water diving, features 95% high-transparency PC material for true original camera imagery, and comes with free anti-fog sheets to stop lens fogging mid-shoot. The tough, crush-resistant hard shell fits the camera precisely, delivering steady, hassle-free and safe shooting in all kinds of marine conditions.

Professional 45M Deep Waterproof Performance

Water leakage and shallow depth limits are the most common issues with generic action camera waterproof cases. This upgraded TELESIN waterproof structure fixes both problems, letting your DJI camera handle complex underwater environments and extended deep dives without any risk of water ingress or hardware damage.

45-Meter Underwater Exploration Capability

Rated for 45-meter deep-water use, this housing outperforms typical daily-use waterproof cases by a large margin. It works perfectly for shallow activities like snorkeling and surfing and easily handles professional deep-diving scenarios. You can freely explore underwater landscapes, capture marine life and record high-quality footage without worrying about your camera’s depth limits.

High-Elastic Rubber Ring Sealing Structure

The internal frame adopts a high-elastic integrated rubber ring for consistent, long-lasting waterproof performance. The flexible, tight-fitting seal creates a fully enclosed waterproof barrier that resists strong deep-water pressure. It blocks seawater from seeping inside, preventing camera short circuits, corrosion and physical damage, and keeps your valuable action camera safe underwater at all times.

Ultra-High Transparency for Original Camera Image Quality

Many waterproof housings sacrifice picture clarity to achieve water resistance, resulting in washed-out, distorted or blurry underwater videos. TELESIN prioritizes both protection and image quality. By using premium transparent materials, this case retains your DJI camera’s native shooting performance for crisp, natural underwater footage.

95% Light Transmittance PC Material

Crafted from high-grade optical PC material with 95% light transmittance, this housing delivers nearly lossless light transmission. Unlike low-quality plastic shells that cause color shifts and blurriness, our premium PC material preserves accurate colors and fine picture details. Both front and rear screens display consistent, vibrant colors during playback, ensuring every underwater shot looks sharp and true to life.

Scratch-Resistant Tempered Glass Lens Cover

The lens area is covered with custom tempered glass, combining high-definition imaging with strong scratch resistance. The reinforced glass withstands sand friction, minor underwater collisions and daily wear, so lens abrasion never ruins your footage quality. It maintains clear shooting performance over long-term use and extends the overall lifespan of your waterproof case.

Durable & Humanized Premium Material Design

Marine environments expose camera gear to constant corrosion, impact and compression, which easily deform or damage ordinary waterproof cases. TELESIN uses high-strength, corrosion-resistant and eco-friendly materials with refined craftsmanship, greatly improving durability for long-term outdoor water use.

316 Marine Grade Stainless Steel Buttons

All functional buttons are built with 316 marine-grade stainless steel, ideal for harsh saltwater environments. This material resists rust, oxidation and seawater corrosion, preventing stuck or faulty buttons after repeated underwater use. Every button aligns perfectly with the original camera keys, offering clear tactile feedback and precise, flexible operation even underwater.

Anti-Drop & Anti-Crush Hard Shell Protection

The rigid hard shell is engineered to withstand impact and compression. It effectively buffers pressure from underwater bumps, rock friction and accidental drops. The sturdy structure protects the camera from deformation, screen cracks and internal component damage, delivering reliable physical protection in rough underwater conditions.

Eco-Friendly & Wear-Resistant Construction

Every material used is non-toxic, eco-friendly and compliant with international outdoor accessory standards. The case features excellent wear and aging resistance, resisting yellowing, deformation and deterioration in high-salt, high-humidity marine environments. It maintains stable performance and appearance over time, offering better long-term value.

Effective Anti-Fog Design for Smooth Underwater Shooting

Lens fogging caused by temperature differences between air and water is one of the most frustrating issues for underwater shooters. Fogged lenses ruin footage and waste precious shooting opportunities. TELESIN’s practical anti-fog system solves this common problem and keeps your lens clear throughout every dive.

Fogging Problem Solution Principle

Condensation forms inside sealed waterproof cases when underwater temperatures shift and humid air gets trapped. Our targeted anti-fog setup balances internal and external temperatures and absorbs residual moisture inside the case. It stops water vapor from settling on the lens surface and prevents persistent fogging during underwater shooting.

Free Included Anti-Fog Sheets

Every waterproof case comes with complimentary high-efficiency anti-fog sheets. Unlike unprotected setups that fog up quickly underwater, these sheets keep your lens clear and free of light scattering. They support extended underwater shooting, letting you capture tiny, delicate underwater details without blur or obstruction.

Applicable Water Sports & Underwater Scenarios

This versatile waterproof case adapts to nearly all water sports and underwater shooting scenarios. It meets daily casual shooting needs and supports professional deep-sea creation, making it an essential accessory for all your outdoor water adventures.

Snorkeling & Surfing Daily Water Sports

Lightweight and portable, this case fits perfectly for shallow-water activities like snorkeling, surfing, river drifting and seaside travel. It provides trustworthy splash and shallow-water protection, so you can freely record fun water sports moments and coastal scenery without bulky, cumbersome gear operation.

Professional Deep Diving Exploration

With a maximum waterproof depth of 45 meters, this housing fully supports professional deep-diving shoots. Whether you’re exploring underwater landscapes, filming coral and marine life or creating high-level underwater videos, it maintains stable sealing and shooting performance under deep-water pressure for professional-grade results.

Simple 3-Step Installation & Operation Guide

Many professional waterproof cases feature complicated installation and stiff buttons that ruin the user experience. TELESIN simplifies the entire process with user-friendly design, enabling fast setup and smooth operation — perfect for beginners and casual users.

Step-by-Step Camera Installation

Step 1: Open the case – Locate the built-in buckle and lift it gently to open the housing.

Step 2: Insert the camera – Place your DJI Osmo Action 3/4/5 into the case following the internal positioning grooves.

Step 3: Lock the case – Close the back cover firmly and press down to fully lock the buckle for a tight seal.

Precise Cutout & Sensitive Operation Experience

All cutouts are precision-machined to match the original camera layout. Nothing blocks the lens, screen, ports or function keys. After installation, every camera feature works normally. Buttons stay responsive, shooting angles remain unrestricted, and you get an almost bare-camera operating feel.

Usage & Maintenance Cautions

Proper use and regular maintenance preserve the case’s waterproof performance and extend its service life. Following simple operational and care guidelines helps prevent leaks and unnecessary damage.

Pre-Water Inspection Standards

Before each use, check the overall condition of the case, buckle and rubber ring. Ensure the rear door rubber seal sits correctly with no debris, damage or misalignment. Always fully close and lock the waterproof latch before entering the water to prevent sealing gaps and leakage.

Post-Use Cleaning & Storage Methods

After saltwater or brackish water use, rinse the case thoroughly with fresh water to remove salt residue and stains, which cause long-term corrosion. Let it air dry in a cool, shaded and well-ventilated spot. Keep storage temperatures below 40°C and avoid direct high-temperature exposure or sealed humid storage spaces.