Fitbit Flex 2 Water‑Resistant Activity Watch – Black

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Identifiers
MPN Fitbit 150408
Model Fitbit FB403BK-EU
Dimensions / Weight
Key Features
Accelerometer
Indicates whether the device is equipped with an accelerometer sensor, which measures acceleration forces along one or more axes.
Yes
Active minutes
Indicates whether the product is capable of measuring and recording active minutes, i.e., the duration of physical activity performed by the user.
Yes
Band colour
The colour or combination of colours that a product’s band (e.g., strap, bezel, or other decorative element) is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the band for consumers.
Black
Band material
The type of material used to construct a product’s band, such as metal, leather, rubber, fabric, silicone, or composite blends. This attribute helps users understand durability, appearance, and suitability for different applications.
Elastomer
Band size
The designation of a product’s band or strap size, expressed as a single label such as "S", "M", "L", "XL" or descriptive terms like "One Size". It indicates the physical dimensions of the band that will fit the device or accessory, helping customers choose a compatible size.
S/L
Battery life
The duration a device can operate on a single charge before needing to be recharged, expressed in various time units such as hours, days or months.
5 day(s)
Battery technology
The chemical composition or classification of a battery, such as lithium‑ion, lithium‑polymer, nickel‑metal hydride, sealed lead acid, alkaline, zinc‑air, etc. It indicates the type of electrochemical reaction that stores and delivers energy in the device.
Lithium Polymer (LiPo)
Bluetooth Yes
Bluetooth version
The specific version of the Bluetooth standard supported by a product, expressed as a numeric value (e.g., 4.2, 5.0) or with additional descriptors such as "+HS" or feature lists. This attribute indicates the capabilities and compatibility for wireless communication.
4
Calories burned
Indicates whether the product can measure or display the number of calories burned during physical activity.
Yes
Charging time
The total duration required to fully charge a device, expressed in minutes or hours. It indicates how long the battery must be connected to a power source before it reaches full capacity.
2 h
Connectivity technology
The network and data interface technologies supported by the product, such as Wired, Wireless, USB, Bluetooth, or combinations thereof. Each value represents a distinct technology that can be used for communication or power delivery.
Wireless
Depth
The linear measurement of an object from front to back or top to bottom, expressed in a physical unit such as millimeters, centimeters, inches, etc. It indicates how deep the item is and can be used for fitting, compatibility, or spatial planning.
6.8 mm
Device type
The general classification of a product, such as tablet, smartphone, router, or computer. It indicates the primary function or form factor that helps buyers quickly identify and compare similar items.
Wristband activity tracker
Distance traveled
Indicates whether the product is capable of measuring and recording the total distance covered by a user during an activity or operation. A value of Yes means the device can log cumulative travel distance, while No indicates this functionality is not available.
Yes
Dustproof
Indicates whether the product is protected against dust ingress, ensuring that fine particles cannot enter and affect its operation or longevity.
Yes
Height
The vertical dimension of a product measured from its lowest to highest point. It is expressed in a physical unit such as millimetres, centimetres or inches and applies to any item where height is relevant, including books, electronics, furniture and other objects.
31.7 mm
Housing material
Indica el material o la combinación de materiales con los que está fabricado el componente más importante de un producto, como metal, plástico, vidrio u otros compuestos. Este atributo ayuda a comprender la durabilidad, peso y estética del artículo.
Elastomer, Stainless steel
LED indicators
A list of the functions or statuses that an LED indicator on a device can display, such as power status, activity, link, and other operational signals.
Yes
Mac operating systems supported
A list of macOS operating system versions that the product supports or is compatible with, such as "macOS 10.15 Catalina", "macOS 11 Big Sur" or newer releases. Each entry represents a distinct OS version that can run on or be supported by the device.
Mac OS X 10.6 Snow Leopard,Mac OS X 10.7 Lion,Mac OS X 10.8 Mountain Lion,Mac OS X 10.9 Mavericks
Mobile operating systems supported
A list of mobile operating systems that the product supports, including specific versions and architectures when relevant. Each value represents a distinct OS that is compatible with the device.
Android 4.3, Android 4.4, Android 5.0, Android 5.1, iOS
Motion sensor
Indicates whether the product includes a sensor that detects movement or motion within its operating environment. A value of "Yes" means the device is equipped with such a sensor, while "No" indicates it lacks this capability.
Yes
Position location No
Splash proof
Indicates whether the product can resist accidental splashes of water or moisture during normal use. A value of "Yes" means the item is designed to handle brief exposure to liquid without damage, while a value of "No" indicates it may be affected by such contact.
Yes
Touchscreen
Indicates whether a device has a touchscreen interface that can detect touch input. The value is "Yes" if the device includes a functional touchscreen, and "No" otherwise.
No
Vibrating motor
Indicates whether the product includes a vibrating motor that can be used for alerts, notifications or haptic feedback.
Yes
Waterproof
Indicates whether the product is resistant to water or moisture exposure. A value of "Yes" means the item can withstand contact with water under specified conditions, while "No" indicates it is not water‑resistant.
Yes
Waterproof up to 50 m
Weight
The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.
23.5 g
Wi-Fi
Indicates whether the product has built‑in Wi‑Fi capability, allowing it to connect to wireless networks without requiring external adapters or dongles.
No
Width
The horizontal measurement of a product, expressed in a linear unit such as millimetres or inches. It indicates how wide the item is from one side to the other and is used for sizing, fitting, and compatibility purposes.
8.9 mm
Workout tracking
Indicates whether the product can track workout or exercise activities such as steps, distance, calories burned, heart rate, and other fitness metrics.
Yes
Fitbit
Fitbit is a brand that produces wearable technology, most notably fitness trackers and smartwatches. The company was founded in 2007 and is headquartered in San Francisco, California.