Panasonic RR-US591E-K. Audio: 1096.8 h, XP/LP/SLP, MP3, 8 Ом. Memory: 4096 MB. Connectivity: USB. Battery: 45 h. Weight & dimensions: 40.4 mm, 16.8 mm, 110.6 mm, 65 g. Other features: AAA, MP3, 40.4 x 16.8 x 110.6 mm