Whether it is food-grade material: Yes

critical for tight control during flight

1 x 9V (including power supply)

Detection frequency range: 1MHz-12GHz

Overview:Designed with a 3D comfort pouch

Sports Smartwatch with Full Touch Screen, Bluetooth Calling & Fitness Tracking Color:Light Purple Whether it is food-grade material:Product information: Color: black, gold, blue, light purple Applicable people: women, men, neutral, teenagers, couples, adults Battery capacity: 230mAh Operation mode: touch button Screen Type: TFT screen Battery backup: upto 10 days Function: waterproof, step counting, heart rate monitoring, blood pressure measurement, remote control selfie, sleep monitoring, blood oxygen detection Packing list: Smart Watch * 1 instruction * 1 charging cable * 1