The SIIEEC Lash Serum is a purple liquid formulated to promote longer, thicker, stronger, and healthier eyelashes. With a volume of 0.2 fl oz, this rapid eyelash growth serum comes in a standard size bottle. Manufactured by SIIEEC, it is designed to be used with 1 Lithium Metal batteries (included). The product dimensions are 3.94 x 3.94 x 3.94 inches, making it a convenient and effective option for achieving natural-looking lashes.