The Sena 30K intercom boasts of 13 hours of communication via Bluetooth and around 8 hours using Mesh Intercom Technology with a working distance of 1.6 km and 2 km, respectively. It features advanced noise control, A2DP, AVRCP, a built-in SBC codec, and even a built-in FM radio tuner with RDS AF. The handsfree intercom is also quick to charge with about 20 minutes plugged in giving five hours of Bluetooth intercom and three hours of Mesh intercom, with a full charge taking a measly one and a half hours.
Also published in GADGETS MAGAZINE February 2018