Dear，Pls leave a massage to tell us what design (Color) do you want.thank you.

Features for Fingertip Pulse Oximeter: - Reliable accuracy and durability- Two Color OLED Display， four display modes.- 4-Direction Display adjustable.- Low voltage indicator， Real-time spot-checks.- Low power consumption，50 hours continuous to work.- Low Perfusion ≤0.4%- Automatic power off when no signal- Small and light weight， convenient to carry- Widely used in hospital， home healthcare， oxygen bar， community medical centre， alpine area， sports healthcare etc.Specification for Fingertip Pulse Oximeter:Display OLED two color displaySpO2 Measurement range: 70～99%Resolution: ±1%Accuracy: ±2% (70%～99%)， unspecified (<70%)Pulse rate Measurement range: 30～240 bpmResolution: ±1%Accuracy: ±2bpm or ±2% (select larger) Low Perfusion ≤0.4%Power 1.5V (AAA size) alkaline battery x 2Supply voltage: 2.6~3.6VWorking current ≤30mAAutomatic power-off Automatically power off when no signal in the oximeter for more than 8 secondsDimension & Weight 130 (L) × 100(W) ×60(H) mm65g(without batteries)Optional Color:- Pink- Blue- Light Purple- Green- GrayPackage Content:- 1 x RPO-8A Fingertip Oximeter- 1 x Lanyard- 1 x English user's manualNote:We will not include batteries， according to China and International law， batteries are not allowed for international air transportation for the safety of shipping and protection environment.