April 10, 2024
Citizen Systems Inc.
Two Patterns of Use for “Body Composition Monitor” and “Weight Scale”
Launch of Citizen Body Composition Monitor ‘HMS721C’
~ Equipped with Bluetooth®, Integrated with Self-Developed App ‘Health Scan’ ~
Citizen Systems Inc. (Headquarters: Nishi-Tokyo City, Tokyo, President: Katsutoshi Mukoshima), a consolidated subsidiary of Citizen Holdings Co., Ltd., will launch the Bluetooth®-enabled body composition monitor ‘HMS721C’ on April 17. This product allows users to freely choose between using it as a “body composition monitor” or a “weight scale,” and has evolved for easy operation through integration with the newly developed smartphone app ‘Health Scan,’ making it simpler to record and manage measurement results.
Release Date: April 17, 2024
Price: Open
This new product provides users with the flexibility to choose their preferred usage (as a body composition monitor or as a weight scale). For those on a diet or training who wish to know body composition metrics like body fat percentage or muscle mass, the body composition monitor is ideal, while those simply looking to manage their weight may prefer the weight scale. Recognizing these different needs, we developed a single product that caters to both uses, even when shared within a household.
Main Features
● Two Patterns of Use Selected by the User
- Users can freely choose to use it as a ‘body composition monitor’ or as a ‘weight scale’
- Supports registration for up to four users
- Automatic power on/off when stepped on, and easy measurement with automatic user recognition
● Equipped with Bluetooth® Functionality for Easy Management of Measurement Results
- Integrates with the self-developed new smartphone app ‘Health Scan’ for easy daily recording and management of measurement results
- Measurement data displayed clearly and understandably with various views such as home, graphs, classification display, and aggregation
● Backlight Feature
- The backlight remains on while operating, allowing for comfortable viewing of measurement results and memory
● Quick Weight Measurement
- Allows quick checking of the weight value even while wearing ‘socks’ or ‘tights/stockings’
Commitment to Reducing Environmental Impact
- Compatible with reusable rechargeable batteries (sold separately) *Compatible with Panasonic’s nickel-metal hydride rechargeable batteries eneloop®
Integration with the ‘Health Scan’ App
‘Health Scan’ is an app that helps users pay attention to their own health by allowing them to easily record and visualize their health status (measurement results) obtained from Citizen healthcare products equipped with Bluetooth®. It also integrates with blood pressure monitors and thermometers, and we plan to increase products compatible with ‘Health Scan’ in the future.
Basic Specifications
| Product Name / Model | Citizen Body Composition Monitor HMS721C / HMS721C-NV (Navy) |
| Measurement Items | Weight, BMI, Body Fat Percentage, Visceral Fat Level, Muscle Mass, Basal Metabolic Rate, Estimated Age, Skeletal Muscle Ratio, Subcutaneous Fat Percentage, Body Water Percentage |
| Data Communication | Bluetooth® Low Energy Ver. 5.1 |
| Dimensions | Approx. 285 (W) × 26 (H) × 285 (D) mm |
| Weight | Approx. 1,600g (including batteries) |
| Included Accessories | 4 AA alkaline batteries (for monitoring), Instruction manual / Warranty |


