Instant Heat,3 Heat Levels :The hand warmers can 2 seconds of fast heating with 3 heating settings for your choice: low-temperature 95-108°F, medium temperature 108-118°F, and high-temperature 118-140°F. This rechargeable hand warmer 2 pack is a reliable partner and always be ready to warm you up, and achieve a stable, adjustable, precise, and comfortable heating…