A4Tech FBX51C Bluetooth & 2.4G Wireless KB earphone p to 35 hrs battery

p to 35 hrs battery backup after mains lost

Professional Recording Quality: With its 14mm condenser capsule and flat frequency response

23dBi high-gain directional antenna and a dedicated metal reflector

TLS and SRTP security encryption technology to protect calls and accounts

Up to 4-ch @ 1080p decoding capacity

A4Tech FBX51C Bluetooth & 2.4G Wireless KB earphone p to 35 hrs batteryA4Tech FBX51C Bluetooth & 2. 4G Wireless KB BT+2. 4GHz] Features Bluetooth and 2. 4GHz connection. Auto Channel Sort, Interchange and connect up to 3 devices with Bluetooth connection and 1 device with 2. 4GHz, Each keystroke will be rewarded with a smooth tactile response from Scissor Key Switch Keycaps. Calibrated precision, 1. 5mm actuation point, less key chatter.