Battery life:Without charger tak tahan lama, so kalau nak pakai, kena pakai sambil cas
Performance:First time guna rasa sakit mcm kena cubit sikit hahaha, tapi lama ii tu rasa sedap, bunyi dia bising sikit, but bulu memang betul ii dicabut dari akar, that's why sakit sikit, and not recommended to do at your private area.