Features:
7.4V 1000mAh rechargeable lipo battery; enough capacity and safe to use.
Easy to plug in and take out.
High quality and portable to carry.
Over charge for protection for every charging port.
Compatible with racing drone RC quadcopter car boat.
Color: Black - High temperature resistant cover and Copper pins - Size: Hole DIameter: 5.5mm, Pin Diameter: 2.1mm - Female DIP type - Suitable for 2.1mm Jack 3 Pin Contact
Features:
Brand new and high quality.
Support song switching.
Sound volume and language switching of voice between Chinese and English.
Voice reports number automatically when there is a call.
Support last number redial.
Support voice reminding function.
Support voice system and navigation system.
The operating distance is up to 10m.
