... get different printing height of characters, and can print fontbold ( max. 4 colum).Build in auto-ink pressure device, and removable ... Stored Message Store 16 message files, each message can include max. 5×7 chars =150 or(16×16chars=75)Print ... Fonts ASCII characters, logo Communication interface Bluetooth between handset and PC, max. distance is 8 meters. Power supply lithium Battery: 12V± ...