1. Closely Fix Battery. Not afraid of battery falling off during rapid flying and accidental collision. 2. The spring clip is easy to open with only one hand. You can freely disassemble and assemble drone battery. 3. Safe stored with drone in Sunnylife B778/B779 combo bag and AQX-14 safety case. 4. Material: Plastic 5. Product Size: 67x40x30mm 6. Net Weight: 8g