Does it come with charger or do you have to buy separately?

It comes with a charger. I have not been able to buy it separately. You have to buy a whole new Flex 2.

Will this recognize activity from stationary cycling?

I don't think any one of these people really answered your question. It is not going to recognize that you are cycling and it will just run up your step count. I find this to be a problem because I am not taking any steps when I am riding my bike and don't want that counted as walking.

do you have to have the app or a phone

If your phone is not compatible with the device (as mine was not compatible) then you MUST purchase a dongle to go with this particular tracker as it is not included in the purchase of the Fitbit Flex 2. With a dongle plugged into your computer, you pull up the Fitbit icon on your computer and tell it to sync if it has not synced in a while....but it will sync from time to time on its own. If your phone does work with the tracker, then you just download the app and you are set to go.

Does this fitness tracker touch the skin? If so has anyone with a nickel allergy worn it for a substantial amount of time?

I have a severe nickel allergy -- rash, swelling, blisters. But the Fitbit Flex 2 band doesn't irritate my skin at all, even though I've been wearing it 24/7 since I got it. Granted, only the two little posts that secure the band (not the tracker itself) have any metal that touches my skin, but usually that would be enough to set my wrist on fire. When I researched before buying, the only official word I could get from Fitbit said the clasp is surgical grade stainless steel, which by definition shouldn't have any nickel in/on it.

Desertcart Logo

Deliver to Vietnam

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

⌚ Elevate your fitness game—wear it, track it, own it.

DISCREET ULTRA THIN DESIGN - Minimalist tracker that hides effortlessly in stylish bands, pendants, or bangles.
SEAMLESS SWIM SWEAT PROOF - Dive into any workout—pool, ocean, or shower—without missing a beat.
REAL TIME CALL TEXT ALERTS - Stay connected with unique vibrations and color-coded LED notifications on your wrist.
SMART TRACK WORKOUT RECOGNITION - Automatically logs your key workouts so you never miss progress.
COMPREHENSIVE ACTIVITY SLEEP MONITORING - Track steps, calories, distance, active minutes, and sleep for a 360° wellness snapshot.

The Fitbit Flex 2 is a sleek, ultra-thin fitness tracker designed for the active professional. Swim-proof and life-proof, it tracks your steps, calories, distance, active minutes, and sleep while delivering smart call and text notifications via subtle vibrations and LED lights. Compatible with smartphones and tablets, it offers automatic workout recognition and a minimalist design that fits seamlessly into your lifestyle.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

8544044₫

Duties & taxes incl.

Vietnamstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews

Color	Black
Size	Free size
Style	minimalist
Team	Fitbit
Compatible with	Smartphones, Tablets, Desktops
Display Type	Digital
Height	7.95 inches
Length	3.94 inches
Weight	0.04 Pounds
Width	1.3 inches
Shape	rectangular
Material Type	Elastomer, Stainless Steel
Number of Items	1
Features	sleep monitor
Sport	fitness, swimming
Batteries Included?	Yes
Description Pile	Lithium-Ion
Brand	Fitbit
Department	womens
Manufacturer	Fitbit
Item model number	FB403BK
Product Dimensions	25.4 x 1.14 x 0.94 cm; 18.14 g
ASIN	B01KH2PV4U

FitbitFlex 2, Black (US Version)

Details

Description

Specifications

Have a Question? See What Others Asked

Common Questions