product description Sales model: 3 probe thermometers Product material: SUS Product color: Silver gray Rated voltage: 120 V/220/240 V Operating frequency: 50Hz/60Hz Bluetooth protocol: Bluetooth 5.2 WIFI: None Base material: bamboo + wood + ceramic Base power type: Polymer battery / Lithium-ion Base battery specifications: 1000mah 3.7V Base charging time: 1h Charging USB: Type-C 5V 1A Base operating time: 48 hours Base alarm function: sound alarm Bluetooth transmission range of the base: 700FT Base display: probe temperature display, alarm display, base power display Probe reaction time: 1 second Probe runtime: 24 hours Probe waterproof rating: IP68 Sealing process for probe handle and body: screw seal and rubber seal Sonde handle material: ceramic Probe body material: 304 stainless steel Maximum probe handle temperature: recommended 320°C, maximum 800°C Probe needle temperature range: 0-100°C Temperature measurement accuracy: 0.5°C Probe temperature measurement method: Digital NTC + chip temperature measurement APP features: Set temperature, alarm, and recipe selection Product certifications: CE, GS, ETL, CBApplicable: Apple and Android phones.All versions of the app can be downloaded and used normally.Packaging information product size ：cm Package size: 17.8* 6.3 *3.2cm N.W：0.17kg W.G：0.22kg