Razrwire Bluetooth Eyewear - Tech Specs

Speaker Positioning: Fully articulated for adaptable fit (rotation, pivot, fore & aft adjustment)
Speaker Engineering: High clarity, full mono audio up to 3 KHz
Talk Time (Battery Life): up to 4 to 6 hours*
Standby Time: up to 100 hours
Battery Type: Integrated rechargeable Li-Ion Polymer
Charging Time: Fast charge (80% capacity) in 1.5 hours; full charge in 2.5 hours
Connectivity: Built-in port for USB (Mini-B) cable connection
Bluetooth Specification: BT 1.2
Bluetooth Profiles: Handsfree, Headset
Radio Frequency: 2.4 GHz, GFSK
Transmitter Power: +4 dBm
Sensitivity: -80 dBm
Weight: 1.3 oz (37 g)
Included Software: None required
Included Accessories: Wall adapter for local region, User Guide, Quick Start Guide
Optional Accessories: Car Charger, World Wall Charger, Carrying Bag, Ballistic Case
Warranty: One year from date of purchase
Operation/storage environment: -20ºC to 50ºC (-4ºF to 122ºF); 5% to 90% relative humidity
Charging environment: 0ºC to 40ºC (32ºF to 104ºF)

*Battery life depends on numerous factors including volume level and environmental temperature.