Binoculars with 10x magnifications are good for smaller indoor sports and viewing performance in smaller concert halls. When in a large stadium or large concert halls, higher magnifications are recommended. Getting really up-close to athletes or artistes would require a high magnification binoculars too.
These compact, lightweight models reduce fatigue when using the binoculars for a long period of time, such as during concerts and sporting events.
IS modes can be selected depending on the usage: Normal IS is good for tracking moving subjects while POWERED IS is good for still subjects.
Choose a magnification that suits the venue size and the kind of activity. Since sports and concerts are usually long in duration, make sure to choose a pair of binoculars with Image Stabilizer.