1-Din Size, Used Both On-vehicle and Indoors Slot-in DVD Rom; Instant Boot-up Media Player: DVD, VCD, CD, MP3 (Play Media Without Booting up Operation System); USB Extension:Wireless Internet Access (Adapted with a USB GPRS Wireless Modem);DVB-T Player Key Specification: Model: MPTC1000 CPU: 1GInternal L1 128KB and L2 64KB cache memory Memory:DDR266 256M (up to 1 GB optional) Hard Disk: 30 G, 4200 r/min; (40G; 60G; 80G optional) DVD Rom: DVD Rom (CDRW & DVD COMBO Optional) Power Supply: DC 6 V ?? 24 V Current Consumption: 2.2 A ?? 3.0 A Power Consumption: < 42W Dimension : 195 x 177x 54(mm) Weight: 1.55 kg