PreSonus ERIS BT 4.5 Active Bluetooth Media Reference Monitors (Pair) sE Electronics powered by an internal rechargeable

powered by an internal rechargeable battery

which is constructed from PVC

For safety

as well as the SD and microSD card slots

PreSonus ERIS BT 4.5 Active Bluetooth Media Reference Monitors (Pair) sE Electronics powered by an internal rechargeableDesigned for content creators, gamers, and mixing engineers, the PreSonus ERIS BT 4. 5 Bluetooth Studio Monitors provide a clear, accurate frequency response and a wide variety of inputs. These are small monitors, giving you 4. 5" woven composite woofers and 1" silk dome tweeters for a balanced sound across its 70 Hz to 20 kHz frequency range. You can input sound to the monitors over 1 4" TRS jacks, unbalanced RCA inputs, a 3. 5mm auxiliary input, and