Spengler OXYSTART Manual Del Usario página 48

Battery Requirements
1.5V (AAA size) alkaline batteries × 2 or 1 rechargeable battery
Battery Useful Life
Two batteries can work continually for 20 hours
Dimensions and Weight
Dimensions
Weight
48
Oxystart® - EN
61(L) × 36(W) × 32(H) mm
About 57g (with batteries)