Please Note: Does not work with Zello

Features / Specifications:

• Connection Mode: BT Protocol 5.1
• Effective Distance: 5~10m
• Battery: CR2032 button battery(replaceable)
• Duration: The battery can be used for 4 to 6 months by pressing 100 times a day
• Working Temperature: -20℃-70℃
• Support Mobile-phone: Android 4.4 and above, Bluetooth 4.0 or above
• Dimensions (H x W x D): 4.1cm x 3.45cm x 1.36cm
• Weight: 12g (approx.)