SYMA Remote Control Helicopter, S107H-E Aircraft Toy with Altitude Hold, One Key Take Off/Landing, 3.5 Channel, High&Low Speed, LED Light, Fly Indoor for Kid Boy Beginner, 16min 2 Battery Red-Upgrade
Amazon.com: Blade Nano RC Helicopter S3 BNF Basic (Transmitter, Battery and Charger Not Included) with AS3X and Safe, BLH01350 : Toys & Games
UdiRC part D33-21 LiPo Battery 3.7V 350mAh 1.3Wh for U12S Alloy RC Helicopter 155249257644 | eBay
1 Pcs 3.7V 180mAh Lipo Battery for Syma S105 S107 S107G S108 S977 Helicopter Toy 739792012624 | eBay