Charice's voice has been described as "crystal clear" and "angelic". She has a very strong and controlled vibrato, and is able to hit very high notes with ease. She is also able to sing in different genres, including pop, R&B, and belting.
Charice's vocal range spans from A3 to F#6, which is three octaves and four notes. She is able to sing in both her chest voice and her head voice, and has a very smooth transition between the two.
Charice is a very talented singer with a unique and powerful voice. Her ability to hit high notes and sing in different genres makes her one of the most versatile singers in the world.