ปุ่มกดตอบคำถามแบบมีเสียงและไฟสีแดง ใช้พลังงานจากแบตเตอรี่ สำหรับการแข่งขัน

Soshine 3.2V 1800mAh LiFePo4 Rechargeable Battery High Quality 3.2V 18650 Battery 18650 1800mAh Batteries for Charge 2000 Cycle

2000/3200mAh Real Capacity For our 18650 30A toy tool flashlight battery 3.7V INR18650 MH1 Li-ion battery +USB charger

18650 Battery Storage Box Case Black Plastic 1/2/3/4 Slot DIY Batteries Clip Holder Container with Wire Lead for 18650 3.7V

12V Li-ion 20Ah 18650 Lithium Rechargeable Battery Pack for Sprayer Kids Electric Toy Car

For Milwaukee M18 Power Tool Battery, Charger, BR, XC, 18V, 6000mAh M18B5, 48-11-1860, Built-in 18650 Battery 6000mAH/12000mAH

4-20PCS Rechargeable lithium battery 18650 Battery 3.7V 3400mAh 34B pour lamp de poche chargeur USB original new NCR18650B

100% Original 18650 Rechargeable Battery 99900mAh 3.7V Li-ion Battery with Charger for Flashlights & Toys

18650 3.7V 2600mah Rechargeable Lithium Battery Actual Capacity for Flashlight Toy Headlight Intercom Replacement Battery

18650 3.7V 19900mAh High Capacity Lithium-ion Battery, 100% New, for Flashlights, Power Banks, Alarm Clocks

(1-10pcs) 3.7V 18650 battery 3500mAh actual capacity rechargeable lithium-ion battery suitable for various electronic products