Spengler OXYSTART Manuel Utilisateur page 48

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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)