Nkọwa nke ngwaahịa:

• Ọnọdụ mmeghe. Nye nkwenye paswọọdụ iji kpọghee, tinye paswọọdụ ziri ezi wee pịa OK, gbanye isi iji kpọghee.
• N'ihe banyere ihe eji eme ya, enwere ya na ABS injection meziri ahu ahu ya na ihe mmetuta ihu ya acrylic, ejiji di elu.
• Ọnọdụ ọkọnọ ike. Ọ na-akwado batrị bọtịnụ mpụga (CR2032) maka inye ọkụ, nhazi ikike ike dị ala, nchebe gburugburu ebe obibi, ndụ batrị karịrị otu afọ, a ga-enwe obere mkpu eletriki dị ala ma ọ bụrụ na enweghi ike.
• Iji okwuntughe. A na-ekewa okwuntughe n'ime paswọọdụ nchịkwa na paswọọdụ onye ọrụ. Ogologo paswọọdụ onye ọrụ bụ nọmba digit asatọ, ma onye ahịa ahụ nwere ike ịgbanwe ya n'onwe ya. Enwere ike ijikọ paswọọdụ n'enweghị ike ruo otu puku iri. A na-echekwa paswọọdụ ozugbo mgbe ọ kwụsịrị ike, enweghị koodu ekpuchighị, enweghị koodu mkpọda.
• Nchedo iji usoro abaghị uru. Tinye koodu ezighi ezi ugboro anọ na otu n'usoro, mkpọchi ahụ ga-enweta mkpuke treble maka 1 nkeji. N'ime oge a, tinye ezi okwuntughe iji wepu oti mkpu.
• Nnukwu nchekwa onwe nke nchekwa. Ọ bụrụ na voltajuru juputara, mkpọchi enweghị ike imechi ya, nke nwere ike igbochi “Tesla” na ọkụ eletrik ndị ọzọ siri ike imepe.
• Ntinye aka dị mfe, naanị mkpa ị ga-akụ okpukpu atọ φ6 site na oghere dabere na ibe ntinye aka.