Sena Spider ST1 Mesh Intercom Headset

Features:
Mesh Intercom 2.0 Technology
Compatible only with other Mesh equipped intercoms (30 and 50 series Sena units for example)
Multi-channel open mesh intercom (up to 9 channels)
Bluetooth 5.1
Low-profile design
Simplified jog dial and two button layout
Hands-Free Profile (HFP)
Advanced Audio Distribution Profile (A2DP)
Voice prompts can be commanded by 11 different languages (switching firmware with each language)
Mesh Intercom: Working distance up to 2.0 km (1.2 mile) in open terrain
HD speakers
Music sharing
Audio Multitasking
Charging time: 1 and a half hours for full charge equals 11.5 hours of mesh talk time
Advanced Noise Control
Built-in SBC Codec
Wide volume control
Smartphone app