To celebrate its 10th anniversary, Japanese underwear manufacturer Ravijour launched a smart product—Mood Up Bra. The appearance of this bra looks no different from ordinary ones, but the special thing is that the bra has a built-in heartbeat detection device, which communicates with the APP installed on the mobile phone through Bluetooth. When you meet someone you like and want to have sex with him further, as a woman, you will be a little reserved, but the accelerated heartbeat cannot fool this bra. Once it detects that the wearers heartbeat frequency reaches a certain trigger point , it will untie automatically without the man having to do anything. It is said that it will be released in the Japanese market on January 24th.