Hello friends, I bought a before three months. I like this product panasonic audio player. good future and good quality condition and my sister using same panasonic audio player. so I am also bought same audio player. sound output effection is very noisy. audio formats was MP3, CD-DA so sound effection very too good. after one month my frnd buy same product. because I m asked him. so he bought same product. battey run time minimum 85 hrs. so I m hearing music continousely. my sister using same product. she was same feeling. I think weight maximum 3 kg and width 140mm. looking superb. do not peel off the covering on the batteries. if the unit is left in the stop mode for approximately 10 minutes. reliability was good product panasonic. I have now two product panasonic. both are good qualiy condition. and money also medium cost but good condition and long feature life. so I like this product.