(features) -This has function protecting mobile phone from water in swimming pool, bathroom and sauna, etc. - As this product with \'\'blow air in\'\' type float in water this protect mobile phone from water and keep not to lose it. - You can communicate with other one in case state without pulling out mobile phone from case. (specification) Model:3 type (HD-171, HD-172 & HD-173) Size: HD-171 (9x19 cm), HD-172 (9x16 cm), HD-173 (9x20 cm) Material: Flexible P. V. C Color: Blue, pink (caution) Before using it please must check any leak and damage after dipping it into water in state of blow air in and fasten the clip.