ATEPA Down Sleeping Bag for Adults, 650FP Recycled Mummy Cold Weather Ultralight 3 Season Waterproof Compact Packable Sleeping Bag with Stuff Sack & 15D Nylon Shell for Backpacking Camping Hiking color:3 Season 40℉ Black Bluetooth-compatible: BLE 5

Bluetooth-compatible: BLE 5

the vibration is safe and comfortable to use

WIFI:Built-in WIFI 5G＋Bluetooth

pls make sure you do not mind before you bid

ATEPA Down Sleeping Bag for Adults, 650FP Recycled Mummy Cold Weather Ultralight 3 Season Waterproof Compact Packable Sleeping Bag with Stuff Sack & 15D Nylon Shell for Backpacking Camping Hiking color:3 Season 40℉ Black Bluetooth-compatible: BLE 515D Nylon Shell, 20D Nylon Liner Imported DOWN SLEEPING BAG: The anatomical mummy shape contours to your body, reducing excess fabric by 25% compared to rectangular bags. With COLDMASTER down (55% RDS Certified white duck down and 45% recycled synthetic), this cold weather sleeping bag supports survival at extreme 10 while preventing cold air gaps around shoulders hips ECO FRIENDLY & DURABLE MATERIAL: Made with GRS certified 15D 480T nylon shell and