Samsung Yepp YP-35 Manual page 26

¥P-35
64MB(YP-35 S) / 126MB(YP-35 H)
1.5V X "i (AAA/LR03 size alkaline battery)
lasts up to 15hours (Nkaline battery,MP3128Kbbs,Vol level 20)
2.62 X "i.77 X 0.65 inches / 1.04 oz (without battery)
Plas6c / Aluminum
80dB with 20kHz LPF (1KHz 0d8)
5mW(Max 10mW)/CH (16 _)
20Hz ~ 20kHz