does this have a warranty ?

Here is the info for your reference:
https://www.melodysusie.com/pages/shipping-warranty

How long does this E-file last

Provides more than 8 hours of use per 2-2.5 hours of charge with a quick charge system.

Hello! How many watts is the power? 24 watts or 36 watts?

It's 24W.

Does the drill bits for the Scarlett fit the sparkle pro?

Yes, Size: 3/32" shank

Does this come with a warranty ?

Here is some info for your reference:
https://www.melodysusie.com/pages/shipping-warranty

What's the torque details please

It'S 480g.cm.

What is the drill bit size?

Universal Size: 3/32" shank

What's the weight of the hand-piece?

It's 168g, 5.9oz.

When shipping internationally, do they come with the electrical plug for that specific country? Or will I need to buy an adapter for it?

We will send out the electrical plug adapter for that specific country directly.

What drill bits does this come with?

One Colorful Tungsten Carbide Nail Drill Bit with medium grit, and one Ceramic Nail Drill Bit with medium grit

What is the wattage?

It's 24W.

What is the wattage and battery capacity of the drill?

It's 24W, and the battery capacity is 2000mAH.

How low will the speed go? Lower than 3rpm? Thinking of cuticle work..

It begins with 3RPM.

How do I know what drill size bits to use

Universal Size - Professional 3/32" stainless steel shank diameter