Main Features‎:‎ ● IPX8 waterproof‎,‎ maximum underwater distance is 10m‎.‎● ABS material‎,‎ scratch resistance‎.‎● Support MP3 and WMA format● With FM function‎.‎● Built‎-in Li‎-ion 160mAh battery‎.‎● 2 or 3 hours charging time and 12 hours playing time‎.‎● It can be used in the seawater‎.‎Specification‎:‎FM Option‎:‎ 87MHz ‎- 108MHzBattery‎:‎ Li‎-ion 160mAhInternal Storage‎:‎ 8GFrequency‎:‎ 20Hz ‎- 20KHzSNR‎:‎ 114dB 0.098 Package weight‎:‎ 0.126 kg Product Size‎(‎L x W x H‎)‎‎:‎ 6.50 x 3.00 x 2.50 cm / 2.56 x 1.18 x 0.98 inches Package Size‎(‎L x W x H‎)‎‎:‎ 13.00 x 4.00 x 11.50 cm / 5.12 x 1.57 x 4.53 inches Package Contents‎:‎ 1 x MP3 Music Player‎,‎ 1 x English User Manual‎,‎ 1 x USB Cable‎,‎ 1 x Clean Cloth‎,‎ 1 x Earphone‎,‎ 4 x Earbud