The 3M WorkTunes Connect + Solar is an over-the-head electronic hearing protector with NRR 24 dB and Bluetooth audio streaming. It features an integrated solar panel on the headband that trickle-charges the internal battery during outdoor use. Designed for landscapers, farmers, and outdoor workers who spend extended hours in sunlight and want to reduce battery replacement frequency. No AM/FM radio tuner. Bluetooth enables streaming from smartphones and other devices.
Does the solar panel fully charge the battery on its own, or is it just supplemental?
The solar panel provides trickle charging to extend battery life during outdoor use in sunlight. It is supplemental — on overcast days or when used indoors, the unit relies on its battery alone. Extended direct sun exposure can significantly reduce how often you need to recharge or replace batteries.
How fast does the solar panel charge the battery?
Charging rate depends on sunlight intensity and angle. In direct full sun, the panel adds meaningful charge throughout the day. It is not designed for rapid charging — think of it as an always-on offset to power consumption rather than a fast top-up.
Can I use it indoors without any sunlight?
Yes. The unit operates on its internal battery just like any rechargeable hearing protector when solar input is unavailable. Indoor fluorescent or LED lighting provides negligible solar charging, so plan to charge via the standard port before indoor-only shifts.
Does the NRR still apply when Bluetooth audio is playing?
Yes. The NRR 24 dB rating is provided by the physical ear cup seal and cushions independently of the audio electronics. Playing music through Bluetooth does not reduce noise attenuation.
Can I take phone calls through this unit?
Yes. The WorkTunes Connect + Solar includes a built-in microphone for hands-free Bluetooth calling. Call audio plays through the ear cups.
Does it have AM/FM radio?
No. The WorkTunes Connect + Solar does not include an AM/FM radio tuner. If you need AM/FM, look at the WorkTunes Connect + AM/FM model instead.
# 3M™ WorkTunes™ Connect + Solar Wireless Hearing Protector **Model:** `90545` **Brand:** 3M **Category:** Hearing Protection > The 3M WorkTunes Connect + Solar is an over-the-head electronic hearing protector with NRR 24 dB and Bluetooth audio streaming. It features an integrated solar panel on the headband that trickle-charges the internal battery during outdoor use. Designed for landscapers, farmers, and outdoor workers who spend extended hours in sunlight and want to reduce battery replacement frequency. No AM/FM radio tuner. Bluetooth enables streaming from smartphones and other devices. ## Specifications | Attribute | Value | |---|---| | Product Type | Electronic Hearing Protector | | Style | Over-the-Head | | Nrr Db | 24 | | Bluetooth | Yes | | Am Fm Radio | No | | Solar Charging | Yes | | Barcode (UPC) | | Source: https://www.jaspecs.com/3m/hearing-protection/90545-3m-worktunes-connect-solar-hearing-protector/