SİNCE THİS İS A SOPH'STİCATED APPATATUS, SHOULD AVUİD TO OPERATE OR TO SRORE UNDER EXTREME TEMPERATURE, ALSO AVOİD VİOLENT BUMPS İS NECESSARY : MOREOVER NEVER DİSASSEMBLE İT. THE REASONS CAUSİNG DOFAUTS ARE : TOUCHİNG THE END FİELD BY HANDS, OR CLEANİNG BY WET MATERİALS. JAPAN BOYU 10.8 CM ENİ 7 CM DAN İBARETTİR