Figure 1 shows the rear shell of the regulator produced by our factory. The thread precision and size requirements of the upper speed Screw sleeve mounting hole are high. In the past, the flipping jig was used on the rocker drill. The quick-change drill sleeve was used as the guide to machine the threaded bottom hole in three steps. First, the φ14mm hole was machined from the twist drill, and then the φ20.5mm twist drill was used to ream the hole. Finally, φ25mm The twist drill chamfers the hole, the effect is not ideal, not only the process, the fixture is cumbersome and complicated, and a small part of the thread bottom hole is out of roundness
- Bluetooth wireless
- Built-in speaker
- Built-in microphone
- Handsfree speakerphone
- Supports profile A2DP (Advanced Audio Distribution Profile)
- Aux in (3.5mm audio input)
- Micro-USB port for battery recharge
- Wireless range: 10 meter
- Controls: volume up, volume down, play/pause, pairing/answer phone
- On/off switch
- LED pairing indicator
- DC battery power: built-in rechargeable battery
- Battery life: ~5 hours at 100% volume
- Dimensions:Diameter 115mm*Height 145mm
- Includes: Micro-USB cable, Aux plug,
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Shenzhen Lanejoy Technology Co.,LTD , https://www.szcoolingrack.com