500 mAh Rechargeable Hand Warmer in Cute Whale Shape includes the following features : 

• Heats up in 3 seconds, making you no longer afraid of the cold in winter
• Slightly warmer, but also emergency backup battery
• Power: 3.7W
• Voltage: 3.7V/5V
• Built-in 500 mah battery
• Type-c rechargeable (charging cable included)
• Designed with an adorable whale shape
• Lightweight and pocketable, making them the perfect solution for staying warm outdoors or outdoors
• Available in various colors
• Customized logo is accepted

Material :

• ABS housing

Size closed :

• Length of 12.2 cm x Width of 8.7 cm x Height of 5.1 cm
• Net weight of 108 grams