Again, sound waves! Also, the Doctor probably thinks it sounds cool, which it does. When did it first appear? Vastra had a sonic screwdriver that was a gift from the Doctor. She used it to shatter the glass of the Crystal Palace. It had a red tip, and was similar in design to that used by the Doctor's eleventh incarnation. ( COMIC: The Crystal Throne) A clone of the Second Doctor also possessed his own sonic screwdriver, which he used along with the Fourth Doctor's to send Hexford home. ( AUDIO: Survivors in Space)

Doctor Who 13th Sonic Screwdriver by Underground Toys

Identified by the Daleks as a " sonic probe", ( TV: Doomsday) the sonic screwdriver was considered to be very advanced Gallifreyan technology, ( PROSE: Heart of TARDIS) although somebody could make one by using resources found on 21st century Earth with help from Stenza technology. ( TV: The Woman Who Fell to Earth) During the Dalek-Movellan War, Davros dismissed the sonic screwdriver as a "simple" tool. ( AUDIO: The Triumph of Davros) next week it seems after SDCC, USA only but we will try to find out beat people to ship to UK but it wont be cheap Scanner, diagnostics, tin opener!” Everything an adventurer needs for the incredible journey ahead!Prop designer Arwel Wyn Jones talked through the new sonic; “It’s a privilege to have been asked to redesign the iconic sonic screwdriver for the Thirteenth Doctor and a new generation of audiences. I can’t wait for people to see how the Doctor acquires it!” It’s the War Doctor that makes a surprise appearance in the 50th Anniversary Special when both the 10th and 11th Doctor realize he’s been fighting the Time War for hundreds of years. And just as John Hurt makes the perfect actor for this grizzled war veteran, so too does the Sonic Screwdriver need a design to fit the part. After crash-landing in Sheffield with no TARDIS, a body that was still cooking, and two alien mysteries to solve, the Doctor realised she was missing something – her sonic screwdriver. As there was no TARDIS around to fire out a replacement, she had to take matters into her own hands. the thirteenth doctor forges her own sonic screwdriver using sheffield steel and an alien crystal in the woman who fell to earth

Doctor Who 6794 Thirteenth Sonic Screwdriver Toy, Multi-Colour Doctor Who 6794 Thirteenth Sonic Screwdriver Toy, Multi-Colour

It does look cool and I really want one (though I have to wait for a while). It’ll be interesting to see a comparison of this one and the CO version when both are released. All of these incarnations utilised the same core software, though they used different hardware. While it was different individual model, for all intents and purposes the War Doctor's sonic was the same as the Eleventh Doctor's some 400 years later. ( TV: The Day of the Doctor) However, the Thirteenth Doctor, having lost the Twelfth Doctor's sonic screwdriver, created her own version. As such, hers used unique software, and was made from 21st century Earth components, as well as part of a Recall Circuit from the Stenza Homeworld. ( TV: The Woman Who Fell to Earth)The sonic screwdriver, also called a sonic probe or simply "the sonic", was a highly versatile tool used by many people throughout the universe, the most prominent of them being the Doctor.