From the press release:
Pearl is proud to reintroduce their line of SensiTone and SensiTone Premium Series snare drums, breathing new life into these highly practical drums with redesigned hardware components and shell compositions. The SensiTone Series is outfitted with tube lugs and Pearl’s new SR-150 snare strainer, featuring a Gladstone-style throw off with Pearl’s Click-Lock technology which locks the snare lever and tension adjuster to retain your settings no matter how hard you play.
The piston slider provides a dependable and smooth action with firm snare tension control. Pearl’s SuperHoop II hoops make for even head-tensioning and lasting durability.
SensiTone shell options include beaded Steel, beaded Brass, and Seamless Aluminum, while SensiTone Premium offers Phosphor Bronze and 5.4mm Maple shells, available in 14"x5" and 14"x6.5" sizes. SensiTone Premium Series drums feature Pearl’s modern ARL Tube Lugs with a bridge-style design for increased shell resonance. A 15"x5" 4-ply Mahogany shell SensiTone snare is also available, finished in Satin Mahagony lacquer.