Product seems legit based on reviews. Though...
*Seller's new with hardly any ratings. Probably doesn't mean much. All known sellers were newbies once.
*Product page states it has official Samsung Malaysia warranty. But, under warranty section, it states there's no warranty. Could also be a product posting error cuz newbie or red flag.

Basically, contact the seller to confirm it's genuine and has warranty before buying.

First obvious signs:
1. Overseas
2. Stated 'No Warranty'

Other signs:
1. Look at seller's page, many product reviews, but no seller review?
2. All products that have reviews are 5 stars. Possible fake reviews although not sure how they do it with 'Verified Purchase'. Probably don't mind paying Lazada some commission for fake sales. Also, no 3 or 4 star reviews as far as I can see. Very suspicious.
3. Also 'New Seller' means less than 3 months. Less than 3 months can get so many reviews for such an obscure seller? What a stretch.

EDIT
Final conclusive sign:
Same reviewers across different products! See for yourself. 

SD cards, flash drives, etc I only buy from official channels like Sandisk official store or reputable sellers like Ookas. Or if they are fulfilled by Lazada.

Too many fake products around. Especially the cheap ones. Too hassle to check one by one so easier just buy from trusted stores even if they are slightly more expensive.

Lazada price slightly higher then shopee normally, but after discount voucher will be lower then shopee and you enjoy 14days return policy.

I think this is a scam CIMB already give max 15% rebate use other code

I terkena already felt fakap

Forget about it. The code won't work. use LZVGEN38 to get -RM38, this is the max discount you can get at this moment.
+RM25 (max for March) + 1% cash rebate on discounted value if you use CIMB Lazada Prepaid card to pay.
CIMB-Lazada Mastercard is not a credit card!