▲【TRACK, COMPARE】 For tracking whitening effect by comparing teeth shades before & after bleaching
▲【SHOW】 Show your patients about your teeth whitening treatments helpfully
▲【16 SHADES, MORE PROFESSIONAL】 16 Colors: A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4.