---
product_id: 2866268
title: "Master Lock Small Travel Safe with Cable, Gray Combination Lock Box, 5900D"
brand: "master lock"
price: "HK$340"
currency: HKD
in_stock: true
reviews_count: 13
category: "Master Lock"
url: https://www.desertcart.hk/products/2866268-master-lock-small-travel-safe-with-cable-gray-combination-lock
store_origin: HK
region: Hong Kong
---

# 4-digit combo lock secure cable tether water-resistant & shock-absorbing Master Lock Small Travel Safe with Cable, Gray Combination Lock Box, 5900D

**Brand:** master lock
**Price:** HK$340
**Availability:** ✅ In Stock

## Summary

> 🔐 Travel smart, lock tight, live worry-free.

## Quick Answers

- **What is this?** Master Lock Small Travel Safe with Cable, Gray Combination Lock Box, 5900D by master lock
- **How much does it cost?** HK$340 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/2866268-master-lock-small-travel-safe-with-cable-gray-combination-lock)

## 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

- • **Device Access Port:** Charge or listen to music through the earbud/charging cable port while locked.
- • **Customizable Security:** Set your own 4-digit combination for personalized peace of mind.
- • **Cable Lock Convenience:** Secure your safe to fixed objects with the included tether cable—no more worries on the go.
- • **Travel-Ready Compactness:** Slim 0.08 cu ft size fits effortlessly in bags or hidden spots.
- • **Durable & Water-Resistant:** Built tough with shock-absorbing foam and water resistance for all conditions.

## 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 professionals on the move, it secures valuables like passports, cash, and electronics with a tether cable and features a convenient access port for charging or earbuds. Perfect for travel, office, or home use, it combines portability with trusted Master Lock security.

## 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: love it!! - I own two of these because I loved my first one so much that I needed one for my mom’s house too. They are super easy to use and figure out while setting it up, and the perfect size!!! super easy to bring around or keep hidden somewhere in a room. These things don’t budge if you don’t put in the exact code!! Great quality, my only wish is it would be nice if the lid opened a little more than it does because it doesn’t open all the way up, it stops before even reaching a 90° angle.
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 |
|---------------|-------|
| ASIN | B005K6JQXQ |
| Additional Features | Portable |
| Alarm | Audible |
| Best Sellers Rank | #1,230 in Office Products ( See Top 100 in Office Products ) #4 in Security Lock Boxes |
| Brand | Master Lock |
| Brand Name | Master Lock |
| Capacity | 0.08 cubic feet |
| Chamber Depth | 3.5 inches |
| Chamber Height | 1 inches |
| Chamber Width | 8.13 inches |
| Color | Gunmetal Grey |
| Control Type | Touchpad Control |
| Customer Reviews | 4.3 out of 5 stars 17,994 Reviews |
| Global Trade Identification Number | 00071649147784 |
| Included Components | 1 |
| Item Dimensions D x W x H | 3.5"D x 9.31"W x 2.25"H |
| Item Type Name | Set Your Own Combination Portable Safe |
| Item Weight | 0.71 kg |
| Lock Type | Combination |
| Manufacturer | Master Lock |
| Manufacturer Part Number | 5900D |
| Manufacturer Warranty Description | One year limited warranty |
| Material | Multi |
| Material Type | Multi |
| Model Number | 5900D |
| Mounting Type | Freestanding |
| Product Dimensions | 3.5"D x 9.31"W x 2.25"H |
| UPC | 071649147784 |
| Unit Count | 1 Count |
| Water Resistance Level | Water Resistant |

## Product Details

- **Brand:** Master Lock
- **Capacity:** 0.08 cubic feet
- **Color:** Gunmetal Grey
- **Included Components:** 1
- **Item Weight:** 0.71 kg
- **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 Small Travel Safe with Cable, Gray Combination Lock Box, 5900D - 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

### ⭐⭐⭐⭐⭐ love it!!
*by S***L on June 9, 2026*

I own two of these because I loved my first one so much that I needed one for my mom’s house too. They are super easy to use and figure out while setting it up, and the perfect size!!! super easy to bring around or keep hidden somewhere in a room. These things don’t budge if you don’t put in the exact code!! Great quality, my only wish is it would be nice if the lid opened a little more than it does because it doesn’t open all the way up, it stops before even reaching a 90° angle.

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐ Great product, but numbers can stick
*by K***S on June 18, 2026*

It’s absolutely perfect except the freaking numbers are so difficult to rotate

## 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

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**Shop now:** [https://www.desertcart.hk/products/2866268-master-lock-small-travel-safe-with-cable-gray-combination-lock](https://www.desertcart.hk/products/2866268-master-lock-small-travel-safe-with-cable-gray-combination-lock)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-08-04*