This is a GARMIN Instinct. It has a glass film attached. The band has been replaced with a HEMSUT paracord band. Purchased new in March 2021. Regarding battery life, it lasts without issue for activities from morning to evening. Available for immediate purchase, but there are small scratches on the face. Please refrain from purchasing if you are concerned about this. A gray digital smartwatch with a heart rate monitor function. - Brand: Garmin - Color: Gray - Display: Digital - Features: Heart rate monitor - Battery level indicator: Yes - Number of buttons: 4 - Sensor: Optical heart rate sensor Thank you for viewing.