Afordability in Pulse Oximetry. his unit features a single directional LED display that includes a pulse rate monitor, an SPO2 monitor and a plethbar. he automatic switch-of feature preserves battery life.1) Suitable for adult, pediatric and neonatal use. Features: Economical 2) LED Display 3)Automatic Switch-Of Feature 4) Adult And Teen Use. All packed 1 piece each box, 50/Case.