Hamwe na super minerval-isobanura ibirahuri, byinjira muri quartz itumizwa hanze, hamwe na kalendari, umukandara ukomeye cyane!Igishushanyo mbonera cyamasaha kiroroshye kandi cyiza, cyerekana imiterere yumwami
Witondere gutanga mong pu ibisubizo kumyaka 5.