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| Display type | Digital |
|---|---|
| Built-in speaker(s) | Yes |
| Touchscreen | Yes |
| Bluetooth version | 5.0 |
| Manufacturer | Fitbit |
| Availability | In Stock |
| Product Manuals (HTML) |
View Manual |
| Technical details | |
|---|---|
| Heart rate monitor | Yes |
| Ambient light sensor | Yes |
| Removable strap | Yes |
| Altimeter | Yes |
| Display technology | AMOLED |
| Built-in camera | No |
| Vibrating motor | Yes |
| Band material | Elastomer |
| Shape | Square |
| Band colour | Black |
| Mobile operating systems supported | Android, iOS |
| Operating system installed | Fitbit OS |
| Built-in microphone | Yes |
| Touchscreen | Yes |
| Built-in speaker(s) | Yes |
| Personal info management (PIM) | Events reminder |
| Display type | Digital |
| Accelerometer | Yes |
| Quality of sleep | Yes |
| Personal goals | Yes |
| Virtual assistant | Amazon Alexa & Google Assistant |
| Smart notifications | Yes |
| Commodity Classification Automated Tracking System (CCATS) | 8517620000 |
| Display | |
| Display technology | AMOLED |
| Touchscreen | Yes |
| Display type | Digital |
| Rounded display corners | Yes |
| Always-on display | Yes |
| Colour display | Yes |
| Design | |
| Market positioning | Smartwatch |
| Watch case size | 40 mm |
| Watch case colour | Black |
| Watch case material | Aluminium |
| Removable strap | Yes |
| Band size | S/L |
| Band material | Elastomer |
| Shape | Square |
| Band colour | Black |
| Buckle material | Aluminium |
| Buckle colour | Black |
| Closure type | Double prong strap buckle |
| Maximum strap length | 22 cm |
| Suggested gender | Unisex |
| Performance | |
| Built-in camera | No |
| Mobile operating systems supported | Android, iOS |
| Operating system installed | Fitbit OS |
| Built-in microphone | Yes |
| Built-in speaker(s) | Yes |
| Features | |
| Heart rate monitor | Yes |
| Ambient light sensor | Yes |
| Altimeter | Yes |
| Display technology | AMOLED |
| Built-in camera | No |
| Vibrating motor | Yes |
| Mobile operating systems supported | Android, iOS |
| Operating system installed | Fitbit OS |
| Built-in microphone | Yes |
| Touchscreen | Yes |
| Built-in speaker(s) | Yes |
| Personal info management (PIM) | Events reminder |
| Display type | Digital |
| Accelerometer | Yes |
| Quality of sleep | Yes |
| Personal goals | Yes |
| Virtual assistant | Amazon Alexa & Google Assistant |
| Smart notifications | Yes |
| Smart wake-up | Yes |
| Remote audio playback | Yes |
| Heart rate contact sensors | Yes |
| Activity tracker | Yes |
| Rounded display corners | Yes |
| Heart rate sensor type | Optical |
| Haptic feedback | Yes |
| Pedometer | Yes |
| Distance travelled | Yes |
| Heart rate measuring | Automatic |
| Weather display | Yes |
| SMS notifications | Yes |
| Calendar notifications | Yes |
| Anti-lost alert function | Yes |
| Timer | Yes |
| Always-on display | Yes |
| Music player | Yes |
| Blood oxygen sensor | Yes |
| Network | |
| GLONASS | Yes |
| GPS (satellite) | Yes |
| Mobile network connection | No |
| Ports & interfaces | |
| Wi-Fi standards | 802.11b, 802.11g, Wi-Fi 4 (802.11n) |
| USB port | Yes |
| Near Field Communication (NFC) | Yes |
| Wi-Fi | Yes |
| Bluetooth version | 5.0 |
| Headphone connectivity | Bluetooth |
| Power | |
|---|---|
| Battery technology | Lithium Polymer (LiPo) |
| Battery life (max) | 144 h |
| Battery life (GPS mode) | 12 h |
| Battery recharge time(80%) | 0.6 h |
| Operational conditions | |
| Operating temperature (T-T) | -10 - 45 °C |
| Storage temperature (T-T) | -20 - 60 °C |
| Operating altitude | 0 - 8534 m |
| GPS Performance | |
| GLONASS | Yes |
| GPS (satellite) | Yes |
| Weight & dimensions | |
| Width | 40.5 mm |
| Depth | 40.5 mm |
| Thickness | 1.24 cm |
| Weight | 30 g |
| Packaging data | |
| Package width | 91.2 mm |
| Package depth | 65.5 mm |
| Package height | 176.6 mm |
| Package weight | 211 g |
| Package type | Box |
| Packaging content | |
| Charger | Yes |
| Logistics data | |
| Commodity Classification Automated Tracking System (CCATS) | 8517620000 |
| Harmonized System (HS) code | 91021200 |
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|---|---|---|---|---|---|---|
| SKU |
FB511BKBK
|
90HC00D1-MWP0E0
|
FB523SRAG
|
FB521BKGB
|
FB521SRWT
|
FB521GLBM
|
| Manufacturer |
Fitbit
|
ASUS
|
Fitbit
|
Fitbit
|
Fitbit
|
Fitbit
|
| Built-in microphone |
Y
|
N/A
|
Y
|
Y
|
Y
|
Y
|
| Market positioning |
Smartwatch
|
Sport watch
|
Smartwatch
|
Smartwatch
|
Smartwatch
|
Smartwatch
|
| Bluetooth version |
5.0
|
4.2
|
5.0
|
5.0
|
5.0
|
5.0
|
| USB port |
Y
|
N
|
N
|
N
|
N
|
N
|
| Touchscreen |
Y
|
Y
|
Y
|
Y
|
Y
|
Y
|
| Wi-Fi |
Y
|
N
|
N
|
N
|
N
|
N
|
| Watch case colour |
Black
|
Black
|
Platinum
|
Black
|
Aluminium
|
Gold
|
| Built-in camera |
N
|
N
|
N
|
N
|
N
|
N
|
| Band colour |
Black
|
Black
|
Blue
|
Black
|
White
|
White
|
| Watch case material |
Aluminium
|
N/A
|
Aluminium
|
Aluminium
|
Aluminium
|
Aluminium
|
| Watch case size |
40 mm
|
46.5 mm
|
N/A
|
N/A
|
N/A
|
N/A
|
| Display type |
Digital
|
Digital
|
Digital
|
Digital
|
Digital
|
Digital
|
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