Quantity   Component name
1 × CC2541 Bluetooth Low Energy module HM-10 BLE module (or similar)
1 × TPS61221 Power Management ICs / Battery Management ICs
1 × NR3015T4R7M Inductors, Chokes, Coils and Magnetics / Fixed Inductors, Chokes and Coils
2 × GRM155R60J106ME4D 10uF SMT capacitor
1 × CR2032 batter holder
1 × CR2032 Batteries and Battery Accessories / Batteries