I just bought: 'Finger Pulse Oximeter With LED Display (Includes Carrycase, Batteries and Lanyard,
comes with 3 AAA batteries supplied, cant choose the colour, thats no prob, but the reviews were so good, I couldnt resist price reduced down to 19.99 on amazon, uk only thing is I would need some advice on how to use and readings, anyone has any I would be pleased to here. thanks from Joan x