t91 2-in-1 smart bracelet wireless bluetooth 5.0 earphone ip68 waterproof sports wristband ppg+ecg fitness tracking smart watch

characteristic 1,multiple detection functions: the bracelet comes with 24 hours real-time heart rate monitoring function, which can better manage your daily exercise data. 2,ipx6 life waterproof: the bracelet also can applicable to harsh sports environment. 3,slim and beautiful: the bracelet body is as thin as 13mm, making the watch better to wear. 4,push-type pop-up earphones: with bluetooth 5.0 surround hifi sound quality, you can enjoy the auditory feast; comfortable to wear.