--- product_id: 2866268 title: "Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey" brand: "master lock" price: "€ 48.77" currency: EUR in_stock: true reviews_count: 8 category: "Master Lock" url: https://www.desertcart.at/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination store_origin: AT region: Austria --- # Water-resistant, shock-absorbing foam 4-digit combo lock Cable secures to fixed objects Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey **Brand:** master lock **Price:** € 48.77 **Availability:** ✅ In Stock ## Summary > 🔐 Travel smart, lock tight, live worry-free. ## Quick Answers - **What is this?** Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey by master lock - **How much does it cost?** € 48.77 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination) ## Best For - master lock enthusiasts ## Why This Product - Trusted master lock brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Tethered Safety:** Includes a durable cable to lock your safe to any fixed object, preventing theft. - • **Rugged & Reliable:** Water-resistant design with shock-absorbing foam built for travel and daily use. - • **On-the-Go Protection:** Compact yet spacious enough to secure smartphones, passports, and cash. - • **Customizable Security:** Set your own 4-digit combination for personalized peace of mind. - • **Music & Charge Friendly:** Earbud/charging port lets you stay connected while your valuables stay locked. ## Overview The Master Lock 5900D Portable Small Lock Box offers a compact, durable, and water-resistant personal safe solution with a customizable 4-digit combination lock. Designed for travel and everyday security, it features a cable for securing to fixed objects and a convenient port for charging or listening to music while locked. Ideal for protecting smartphones, passports, cash, and credit cards, this gunmetal grey safe combines portability with trusted Master Lock reliability. ## Description The Master Lock 5900D Set Your Own Combination Portable Personal Safe features durable construction made to withstand abuse and is water resistant. The safe measures 2-1/5in (57mm) H x 9-2/5in (23.9cm) W x 5-1/10in (13.1cm) D; and is ideal for recreation, campus, office, travel or leisure use. The safe includes a cable to wrap securely around a fixed object or use as a carrying handle. The Limited Lifetime Warranty provides peace of mind from a brand you know and can trust. Review: Great quality - Much bigger than I thought originally! Great quality and very excited to gift this to my brother in law. Waterproof, has a lock combination and even has a spot to put your headphones while in use without getting anything wet on the inside. Fantastic for anyone and on the go!!! Would highly recommend and buy again. Review: Perfect Little Safe for Peace of Mind! - The Master Lock Portable Small Lock Box has been an incredibly useful addition to our household. It’s compact, sturdy, and perfect for securing important items like cash, IDs, keys, and small documents. I really appreciate the “set your own combination” feature - super easy to personalize and even easier to use. Its portable size makes it great for travel, dorm rooms, or just keeping valuables tucked away at home. It’s lightweight but still feels durable and reliable. I love knowing that important items are protected without needing a big, bulky safe. The safe is easy to open and I find it very useful when traveling. Overall, this little lock box offers great security, convenience, and peace of mind. Highly recommend for students, travelers, or anyone who wants a simple and effective personal safe! ## Features - Small safe is ideal for use as a travel safe or personal safe for protection and security from theft - Secure small safe to a fixed object with cable; Portable safe is best used to protect smart phones, passports, cash, and credit cards - Set your own four-digit combination portable safe; Ear bud/charging cable access port to conveniently listen to music or charge devices while locked - Constructed with a shock absorbing foam, small lock box is designed to be water-resistant - Exterior dimensions: 2-1/4 inch H x 9-17/32 inch W x 4-59/64 D; Interior dimensions: 1-1/4 inch H x 8-1/8 inch W x 3-1/2 inch D ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | Master Lock | | Capacity | 0.08 Cubic Feet | | Color | Gunmetal Grey | | Lock Type | Combination | | Material | Multi | | Product Dimensions | 3.5"D x 9.31"W x 2.25"H | ## Product Details - **Brand:** Master Lock - **Capacity:** 0.08 Cubic Feet - **Color:** Gunmetal Grey - **Included Components:** 1 - **Item Weight:** 0.71 Kilograms - **Lock Type:** Combination - **Material:** Multi - **Mounting Type:** Freestanding - **Product Dimensions:** 3.5"D x 9.31"W x 2.25"H - **Special Feature:** Portable ## Images ![Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, 5900D, Gunmetal Grey - Image 1](https://m.media-amazon.com/images/I/717DzkodA8L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Would this hold about 10,000 cash. All one hundred bills?** A: Forget the 10,000 how much monopoly money can it hold i don't want my family stealing from me when i go to the bathroom **Q: What are interior dimensions? Wondering if it would fit an ipad mini and kindle?** A: No, it certainly would not hold a Kindle. I can close it with my car/house keys, my passport, my billfold and my Droid Razr cell phone inside, and maybe a couple of Krugerrands; that's about all. I just made some detailed measurements, and here's what I found:Height (maximum) 1.5", (minimum)1.0"Width at maximum height, 2.75"; at 1.0" height, 3.25""The ends are round and semi-circular; it could hold a narrow object 8.5" long, but the largest rectangular object would be about 6" long, 3" high, and 1" deep - roughly the size of a personal checkbook. I know this is a lot of answer. I hope it helps you, and anyone else who needs to know its inside dimensions. **Q: Is the interior deep enough for 2 or 3 regular size prescription pill bottles?** A: I just went and tried my prescription bottle in it and it fit. My bottle is about 1.5-2 inches around and about 4 inches tall. You could fit about 4 of them in there. I hope this helps. **Q: This is only waterproof, not fireproof or resistant?** A: No small case like this, made out of anything, is fire resistant. small boxes have too little thermal inertia ie too much thermal transmission to be rated as fire proof or fire resistance. Anyone saying anything this size is fireproof is lying. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great quality *by A***S on December 21, 2025* Much bigger than I thought originally! Great quality and very excited to gift this to my brother in law. Waterproof, has a lock combination and even has a spot to put your headphones while in use without getting anything wet on the inside. Fantastic for anyone and on the go!!! Would highly recommend and buy again. ### ⭐⭐⭐⭐⭐ Perfect Little Safe for Peace of Mind! *by D***N on December 5, 2025* The Master Lock Portable Small Lock Box has been an incredibly useful addition to our household. It’s compact, sturdy, and perfect for securing important items like cash, IDs, keys, and small documents. I really appreciate the “set your own combination” feature - super easy to personalize and even easier to use. Its portable size makes it great for travel, dorm rooms, or just keeping valuables tucked away at home. It’s lightweight but still feels durable and reliable. I love knowing that important items are protected without needing a big, bulky safe. The safe is easy to open and I find it very useful when traveling. Overall, this little lock box offers great security, convenience, and peace of mind. Highly recommend for students, travelers, or anyone who wants a simple and effective personal safe! ### ⭐⭐⭐⭐ Worked as it should. *by T***L on December 2, 2025* Love the safe. Works well on my trips. I do wish it was just a little bit wider. I had to take my passport out of the holder for it to fit. That is my only con at the moment. ## Frequently Bought Together - Master Lock Portable Small Lock Box, Set Your Own Combination Lock Portable Safe, Personal Travel Safe, ‎5900D, Gunmetal Grey - Apple AirTag 4 Pack --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination](https://www.desertcart.at/products/2866268-master-lock-portable-small-lock-box-set-your-own-combination) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*