1.You can contact the customer service. for any question regarding the product.
2.Ask the question in English to get answer faster.
3.Keep your question short and to the point.
ຮັບປະກັນຄວາມປອດໄພໃນການຊຳລະ
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The article works fine with 3,7 V. With 7,4 V I broke the first one.
Withe 3,7 V the distance is 1,5 cm.
scary stong
Tips:For questions about your order, place of delivery, product discount, taxation, delivery time, warranty, shipping, payment, exchange rate, and other questions unrelated to the product, please contact customer service.
A part of the QA has been auto-translated.