Specification: Maximum Sound Level: 90dBA.
Frequency Range: 90Hz - 20kHz.
Drivers: Two 2" drivers and two 2" x 4" Passive Radiators.
Pair up to 8 Bluetooth enabled source devices - Connect up to two source devices at the same time. Mobile range of play is up to 45m (150 ft).
Rechargeable Lithium-Ion Battery for up to 15 hours of battery life between Micro USB charges.
Compatibility: For Audio Playback: Smartphones, tablets and other devices that support Bluetooth and Bluetooth Smart wireless audio profile [Advanced Audio Distribution Profile (A2DP)] or 3.5 mm audio output. For Phone Calls: Phones that support Bluetooth Hands-Free Profile (HFP1.5)
Compatibility: This lens is only compatible with fixed focal length L-series lenses 135mm and over, as well as the EF 70-200/2.8L, EF 70-200/2.8L IS, EF 70-200/4L, and EF 100-400/4.5-5.6L.