BP340 6/3/2019 Category: Products, DX Series Digital Wireless Systems, Beltpacks, Wireless, DX340ES Digital Wireless Systems, Beltpack 2.4GHz license-free operation Up to 4 full-duplex or 15 half-duplex beltpacks and/or all-in-one handsets per base station 7kHz wideband audio Single or dual-channel operation Light-weight, compact design, ergonomic design, weighing 7.4 oz Rugged and reliable Voice prompts Internal antenna Up to 20 hours of battery life Uses BAT41 Batteries and AC40 Battery Charger